Enter proportion values below:

  
---------- ----------
  
  

You entered the following equivalent proportions:

3c
4
=
  
135
1

Define the proportion formula:

If 2 proportions are equal:
we can cross multiply to get:

Numerator 1
Denominator 1
=
  
Numerator 2
Denominator 2

Numerator 1 * Denominator 2 = Denominator 1 * Numerator 2

Solving for Numerator 1 we get:

Numerator 1  =  Denominator 1 * Numerator 2
  Denominator 2

Evaluate and simplfy

3c  =  4 * 135
  1

3c  =  540
  1

3c  =  540

Divide each side by 3

3c
3
=
  
540
3

Final Answer

c = 180





What is the Answer?
c = 180
How does the Proportion Calculator work?
Free Proportion Calculator - 1) Calculates the missing link of 2 equivalent proportions or ratios.
2) Also determines if two numerical proportions that you entered such as 1/10=6/12 are equivalent or not equivalent. Note: You can use all allowable operators such as =,<,≤,>,≥
This calculator has 4 inputs.

What 3 formulas are used for the Proportion Calculator?

a/b=c/d
ad=bc


For more math formulas, check out our Formula Dossier

What 3 concepts are covered in the Proportion Calculator?

equivalent
equal in value, amount, function, meaning
proportion
n equation in which two ratios are set equal to each other
a/b = c/d
ratio
indicates how many times one number contains another
Example calculations for the Proportion Calculator
Proportion Calculator Video

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