Triangle HJK is similar to triangle LMN.

Which proportion can be used to calculate the length of line segment L M in centimeters?

7.5 / 11.25 = LM / 4.5
6 / 7.5 = LM / 9
11.25/LM = 4.5/7.5
9/LM = 6/ 4.5

The proportion 11.25/LM = 4.5/7.5 can be used to calculate the length of line segment LM in centimeters.