SOLUTION: Which of the following is NOT a proportion? : 3/2=15/10 17/4=85/20 8/3=48/18 11/13=66/91

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Question 1010657: Which of the following is NOT a proportion? :
3/2=15/10
17/4=85/20
8/3=48/18
11/13=66/91
Answer by Edwin McCravy(20055)   (Show Source): You can put this solution on YOUR website!


Multiply the upper left number by the lower right number, get 3×10=30
Multiply the upper right number by the lower left number, get 15×2=30
They are the same, so this is a proportion.



Multiply the upper left number by the lower right number, get 17×20=340
Multiply the upper right number by the lower left number, get 85×4=340
They are the same, so this is a proportion.




Multiply the upper left number by the lower right number, get 8×18=144
Multiply the upper right number by the lower left number, get 48×3=144
They are the same, so this is a proportion.



Multiply the upper left number by the lower right number, get 11×91=1001
Multiply the upper right number by the lower left number, get 66×13=858
They are NOT the same, so this is NOT a proportion.

Edwin
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