Explanation:
when 2 objects are similar, that means that all the angles of one object are the same as the angles in the other object. and - the scaling factor of one pair of correlating sides is the same for all pairs of correlating sides.
therefore,
x/2.7 = 4.8/3.6 = 4/3
x = 4×2.7/3 = 4×0.9 = 3.6 m