I can see you come from outside the USA. No insults intended!! . Anyways, we have to put one side of the ratio and match it to 48. . Or even better... . MAKE!! A!! PROPORTION!! . So... Let's say 7 is proportional to 48... so 7/5 = 48/x, where x is the number equivalent to ratio of 5. . Cross multiply!! <span>. </span>7x = 240. . Divide 7 on both sides. . x = 34 2/7. . Hope I helped!!