Finding the Fourth Proportional to 2,385.76, 3,578.84 and 924.80
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Solution
The fourth proportional to 2,385.76, 3,578.84 and 924.80 is: 1,387.28
Step by Step Solution
- Step 1: Write the proportion equation
2,385.76 : 3,578.84 = 924.80 : x - Step 2: Convert to fraction form
2,385.76/3,578.84 = 924.80/x - Step 3: Cross multiply
2,385.76x = 3,578.84 × 924.80 - Step 4: Simplify right side
2,385.76x = 3,309,711.23 - Step 5: Solve for x
x = 3,309,711.23/2,385.76 - Step 6: Final answer
x = 1,387.28
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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.