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Finding the Fourth Proportional to 6,691.31, 9,233.54 and 3,706.86

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Solution

The fourth proportional to 6,691.31, 9,233.54 and 3,706.86 is: 5,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.31 : 9,233.54 = 3,706.86 : x
  2. Step 2: Convert to fraction form
    6,691.31/9,233.54 = 3,706.86/x
  3. Step 3: Cross multiply
    6,691.31x = 9,233.54 × 3,706.86
  4. Step 4: Simplify right side
    6,691.31x = 34,227,490.93
  5. Step 5: Solve for x
    x = 34,227,490.93/6,691.31
  6. Step 6: Final answer
    x = 5,115.22

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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.