해 비례.X:3.5=1.4:5.6,1/2:1/5=X:1/10,36/X=1.8:5,2/5:X=8/7:10,3.6:0.9=X:0.15,X:3/5=3/8:0.05 해 비례.X:3.5=1.4:5.6,1/2:1/5=X:1/10,36/X=1.8:5,2/5:X=8/7:10,3.6:0.9=X:0.15,X:3/5=3/8:0.05

해 비례.X:3.5=1.4:5.6,1/2:1/5=X:1/10,36/X=1.8:5,2/5:X=8/7:10,3.6:0.9=X:0.15,X:3/5=3/8:0.05 해 비례.X:3.5=1.4:5.6,1/2:1/5=X:1/10,36/X=1.8:5,2/5:X=8/7:10,3.6:0.9=X:0.15,X:3/5=3/8:0.05

X:3.5=1.4:5.6、
X=3.5×1.4÷5.6
X=7/8
1/2:1/5=X:1/10、
X=1/2×1/10÷1/5
X=1/4
36/X=1.8:5
X=36×5÷1.8
X=100
2/5:X=8/7:10、
X=2/5×10÷8/7
X=7/2
3.6:0.9=X:0.15、
X=3.6×0.15÷0.9
X=0.6
X:3/5=3/8:0.05
X=3/5×3/8÷0.05
X=9/2.