SOLUTION: state weather the ratios are proportional 1. 50 over 40 equal 5 over 4 2. 12 to 11, 36 to 33 3. 20:40, 1:2 4. 33 over 36 equals 44 over 48

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Question 97480: state weather the ratios are proportional
1. 50 over 40 equal 5 over 4
2. 12 to 11, 36 to 33
3. 20:40, 1:2
4. 33 over 36 equals 44 over 48
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
They are proportional if when you cross multiply they equal;
1. 50 over 40 equal 5 over 4
50%2F40=5%2F4
50*4=200
40*5=200
2. 12 to 11, 36 to 33
12%2F11=36%2F33
12*33=396
36*11=396
3. 20:40, 1:2
20%2F40=1%2F2
20*2=40
1*40=40
4. 33 over 36 equals 44 over 48
33%2F36=44%2F48
33*48=1584
44*36=1584
They are all proportions
:)