<-- Enter Scores
<-- Enter Average
  

Given 3 scores of 74, 78, 63, what should be score number 4 in order to attain an average score of 80?

Setup Average Equation:

Average  =  Sum of our 3 numbers + unknown score of x
  Total Numbers

80  =  74 + 78 + 63 + x
  4

Cross Multiply

74 + 78 + 63 + x = 80 x 4
x + 215 = 320

Subtract 215 from both sides of the equation to isolate x:

x + 215 - 215 = 320 - 215
x = 105





What is the Answer?
x = 105
How does the Missing Average Calculator work?
Free Missing Average Calculator - Given a set of scores and an average, this calculates the next score necessary to attain that average
This calculator has 2 inputs.

What 1 formula is used for the Missing Average Calculator?

Average = (your Sum of all numbers + unknown score of x)/Total Numbers

For more math formulas, check out our Formula Dossier

What 3 concepts are covered in the Missing Average Calculator?

average
A number expressing the central value of a set
Sum of Values/n
missing average
A score or rank required to reach a certain average
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
Example calculations for the Missing Average Calculator
Missing Average Calculator Video

Tags:



Add This Calculator To Your Website