The solution I posted earlier gives you the answer in feet.
http://www.jiskha.com/display.cgi?id=1445463974
A flea 1/16 of an inch tall can jump 9 3/8 inches high. If a person five feet tall could jump like a flea, how high could she jump? Careful: Feet are not inches.
2 answers
A flea is only about 1/16 of an inch tall but can jump 8 inches high if a human could jump as high in proportion to its height as a flea can, how high could a 5-foot-tall human jump