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Finding the Fourth Proportional to 6,747.65, 9,312.91 and 3,915.91

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Solution

The fourth proportional to 6,747.65, 9,312.91 and 3,915.91 is: 5,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,747.65 : 9,312.91 = 3,915.91 : x
  2. Step 2: Convert to fraction form
    6,747.65/9,312.91 = 3,915.91/x
  3. Step 3: Cross multiply
    6,747.65x = 9,312.91 × 3,915.91
  4. Step 4: Simplify right side
    6,747.65x = 36,468,451.25
  5. Step 5: Solve for x
    x = 36,468,451.25/6,747.65
  6. Step 6: Final answer
    x = 5,404.62

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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.