Finding the Fourth Proportional to 3,991,801.91, 5,508,688.65 and 2,156,260.10
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Solution
The fourth proportional to 3,991,801.91, 5,508,688.65 and 2,156,260.10 is: 2,975,640.02
Step by Step Solution
- Step 1: Write the proportion equation
3,991,801.91 : 5,508,688.65 = 2,156,260.10 : x - Step 2: Convert to fraction form
3,991,801.91/5,508,688.65 = 2,156,260.10/x - Step 3: Cross multiply
3,991,801.91x = 5,508,688.65 × 2,156,260.10 - Step 4: Simplify right side
3,991,801.91x = 11,878,165,511,774.42 - Step 5: Solve for x
x = 11,878,165,511,774.42/3,991,801.91 - Step 6: Final answer
x = 2,975,640.02
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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.