Solve the proportion- 1/2 :5/6= f : 3/4
We have (-1/2) x (6/5) = f x (4/3);Then, - 6/10 = (4f) / 3;Finally, (-6) x 3 = 10 x (4f);- 18 = 40 x f;f = -18/40;f = -9/20;
