Finding the Fourth Proportional to 3,878,049.13, 5,351,744.70 and 2,159,206.55
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Solution
The fourth proportional to 3,878,049.13, 5,351,744.70 and 2,159,206.55 is: 2,979,725.58
Step by Step Solution
- Step 1: Write the proportion equation
3,878,049.13 : 5,351,744.70 = 2,159,206.55 : x - Step 2: Convert to fraction form
3,878,049.13/5,351,744.70 = 2,159,206.55/x - Step 3: Cross multiply
3,878,049.13x = 5,351,744.70 × 2,159,206.55 - Step 4: Simplify right side
3,878,049.13x = 11,555,522,210,167.79 - Step 5: Solve for x
x = 11,555,522,210,167.79/3,878,049.13 - Step 6: Final answer
x = 2,979,725.58
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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.