Given 4 scores of 81, 83, 87, 89, what should be score number 5 in order to attain an average score of 88?
Setup Average Equation:
| Average = | Sum of our 4 numbers + unknown score of x |
| Total Numbers |
| 88 = | 81 + 83 + 87 + 89 + x |
| 5 |
Cross Multiply
81 + 83 + 87 + 89 + x = 88 x 5x + 340 = 440
Subtract 340 from both sides of the equation to isolate x:
x + 340 - 340 = 440 - 340x = 100
You have 2 free calculationss remaining
What is the Answer?
x = 100
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.
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
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
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