Finding the Fourth Proportional to 7,756.99, 11,631.07 and 5,294.79
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Solution
The fourth proportional to 7,756.99, 11,631.07 and 5,294.79 is: 7,939.17
Step by Step Solution
- Step 1: Write the proportion equation
7,756.99 : 11,631.07 = 5,294.79 : x - Step 2: Convert to fraction form
7,756.99/11,631.07 = 5,294.79/x - Step 3: Cross multiply
7,756.99x = 11,631.07 × 5,294.79 - Step 4: Simplify right side
7,756.99x = 61,584,073.13 - Step 5: Solve for x
x = 61,584,073.13/7,756.99 - Step 6: Final answer
x = 7,939.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.