Question

Sarah has a picture that fits a 3 inch wide by 5 inch long picture frame. She wants to make the picture proportionately bigger so the picture fits a frame with a length of 15 inches. What would the width of the frame need to be?

Answer 1

9 inches

Explanation:

So the proportions are 3 by 5, and she wants to make the length 15

To make the length 15, you need to multiply the length by 3 (5*3)

Because it is proportional, you also multiply the width by 3

3*3 = 9