what is the number between 4.5 and 4.75 on the number line? what is the number between 4.5 and 4.75 on the number line? what is the number between 4.5 and 4.75 on the number line? Solution There are infinite number of numbers between two numbers on a number line One of the numbers is 4.6 4.6>4.5 and 4.6<4.75.