ratio and proportion

1. RATIO &
PROPORTION

2. Number of red rings to the number of green
rings 4:3
Number of green rings to number of blue
rings 3:6
Number of blue rings to number of red rings 6:4
Number of blue rings to the total number of
rings 6:13
Number of red rings to total number of rings 4:13
Total number of rings to total number of
green rings 13:3

3. Ratio of number of squares to the number
of triangles 6:5
Ratio of the number of triangles to the
number of squares 5:6
Ratio of the total number of figures to the
number of triangles 11:5
Ratio of the number of squares to the total
number of figures 11:6

4. 1. roses to leaves
2:3 2/3
2. basketballs to tennis
balls 2:8 2/8
3. books to crayons
4:5 4/5
4. books to leaves
4:3 4/3
5. roses to crayons
2:5 2/5
6. crayons to all objects
5:24 5/24

5. Directions: Determine if the
sets of ratios are equal.
1). 3 : 4 = 12 : 16
2). 3 : 2 = 6 : 4
3). 4 : 5 = 13 : 15
4). 6 : 36 = 1 : 6
5). 9 : 2 = 12 : 16

6. Clarence has 7 marbles in his one
mini bottle. How many marbles does
he have if he has filled 6 mini
bottles?

7. Marbles 7 14 21 28 35 42
Bottle 1 2 3 4 5 6
Ratio of marbles to bottles is 7 : 1

8. Directions: Which of the following ratios make
proportions? Put a check before the number.
____1. 9 : 3 = 18 : 6
____2. 3 : 5 = 7 : 3
____3. 2 : 6 = 4 : 12
____4. 5 : 4 = 15 : 12
____5. 5 : 3 = 10 : 7
____6. 2 : 7 = 6 : 21
____7. 1 : 2 = 8 : 16
____8. 2 : 8 = 8 : 28
____9. 8 : 10 = 40 : 50
____10. 9 : 5 = 18 : 11

9. During a basketball practice,
Ceejay made 8 baskets for every
10 throws. How many baskets
should Clarence make is 20
throws to equal Ceejay’s
performance?

10. baskets 8 16 24 32
throws 10 20 30 40
Ratio of basket to throws is 8 : 10

11. Directions: Give 3 ratios equal to the
following.
1). 2 : 5 = 4:10 = 6:15 = 8:20
2). 4 : 1 = 8:2 = 12:3 = 16:4
3). 2 : 6 = 4:12 = 6:18 = 8:24
4). 3 : 8 = 6:16 = 9:24 = 12:32
5). 10 : 12 = 20:24 = 30:36 = 40:48

12. Finding the Missing Term in a
Proportion

13. During weekends, Zeny helps her mother
sell buko juice. For every buko, Zeny adds
4 litres of water. How many litres of water
does she need for 3 bukos so that the
taste will be the same?
buko 1 3
Liters of water 4 12

14. 1 : 4 = 3 : ___
12
1N 1N = 12
1 1
N = 12
12

15. 2 : 5 = ___ : 30
5n
60 5n = 60
5 5
N = 12
12

16. 5 : ___ = 10 : 30
10n
150 10n = 150
10 10
N = 15
15

17. 3 : 7 = 21 : ___
147
3N 3N = 147
3 3
N = 49
49

18. 4 : 7 = ___ : 14
7n
56 7n = 56
7 7
N = 8
8

19. 10 : 5 = 12 : ___
60
10n 10n = 60
10 10
N = 6
6

20. ___ : 10 = 28 : 5
280
5n 5n = 280
5 5
N = 56
56

21. Assignment:
1) 9 : N = 27 : 15
2) N : 8 = 12 : 16
3) 5 : 3 = 25 : N
4) 3 : n = 9 : 12
5) n : 6 = 20 : 24

22. Word Problems on
Proportion

23. Sam used 6 loaves of bread on
an 8-day hiking trip. He wants to
know how many loaves of bread he
should pack for a 12-day hiking trip
if he eats the same amount of bread
each day.

24. Marie can make 3 small mango pies
for every 5 mangoes. How many
pies can she make with 25
mangoes?

25. Amanda and Cass sell newspapers on
weekends to earn extra money. For every 3
newspapers that Amanda sells, Cass sells
5. If Amanda sold 15 newspapers, how
many does Cass sell?

26. A motorist travelled 240
km is 3 hours. At the same
rate, how long will take to
travel 400 km?