Finding the Fourth Proportional to 7,925.91, 10,915.70 and 6,126.76
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Solution
The fourth proportional to 7,925.91, 10,915.70 and 6,126.76 is: 8,437.88
Step by Step Solution
- Step 1: Write the proportion equation
7,925.91 : 10,915.70 = 6,126.76 : x - Step 2: Convert to fraction form
7,925.91/10,915.70 = 6,126.76/x - Step 3: Cross multiply
7,925.91x = 10,915.70 × 6,126.76 - Step 4: Simplify right side
7,925.91x = 66,877,874.13 - Step 5: Solve for x
x = 66,877,874.13/7,925.91 - Step 6: Final answer
x = 8,437.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.