Answer:

Explanation:
Given,
The number of calories in 5 cups of yogurt = 750,
So, the number of calories in 1 cup of yogurt =

Now, let c be the number of calories in 9 cups of yogurt,
⇒ The number of calories in 1 cup =


Which is the required proportion that would be used to determine the number of calories in 9 cups of yogurt.