You entered the following equivalent proportions:
| -8 | |
| 9x |
| > |
| -61 |
| 81 |
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 1 we get:
| Denominator 1 > | Numerator 1 * Denominator 2 |
| Numerator 2 |
Evaluate and simplfy
| 9x > | -8 * 81 |
| -61 |
| 9x > | -648 |
| -61 |
9x > 10.622950819672
Divide each side by 9
Because we have an inequality and we are dividing by a positive number, we keep the same sign >
| 9x | |
| 9 |
| > |
| 10.622950819672 |
| 9 |
Final Answer
x > 1.1803278688525
Common Core State Standards In This Lesson
CCSS.MATH.CONTENT.7.RP.A.2
What is the Answer?
x > 1.1803278688525
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.
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
ad=bc
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
