Enter proportion values below:

  
---------- ----------
  
  

You entered the following equivalent proportions:

3
240
=
  
1
t

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 Denominator 2 we get:

Denominator 2  =  Denominator 1 * Numerator 2
  Numerator 1

Evaluate and simplfy

t  =  240 * 1
  3

t  =  240
  3

Final Answer

t = 80


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Common Core State Standards In This Lesson
CCSS.MATH.CONTENT.7.RP.A.2
What is the Answer?
t = 80
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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