x:3/4= 15:0.8
0.8x=45/4
x= 14.0625
(2) The ratio of 2/11to X is equal to the ratio of 4/1to 60.
2/ 1 1:x = 4/ 1 1:60
4/ 1 1x = 60 * 2/ 1 1
x=30
(3) The two external terms are 10.25 and 1.6, and the two internal terms are 0.5 and x.
10.25:0.5=x: 1.6
0.5x= 10.25* 1.6
0.5x= 16.4
x=32.8