Mayerlin models the volume of a popcorn box as a right rectangular prism and the box can hold 49 cubic inches of popcorn when it is full. Its length is 2\frac{3}{4}2
4
3

in and its height is 5\frac{1}{2}5
2
1

in. Find the width of the popcorn box in inches. Round your answer to the nearest tenth if necessary.