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Finding the Fourth Proportional to 8,376, 12,565.89 and 5,915.49

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Solution

The fourth proportional to 8,376, 12,565.89 and 5,915.49 is: 8,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376 : 12,565.89 = 5,915.49 : x
  2. Step 2: Convert to fraction form
    8,376/12,565.89 = 5,915.49/x
  3. Step 3: Cross multiply
    8,376x = 12,565.89 × 5,915.49
  4. Step 4: Simplify right side
    8,376x = 74,333,396.64
  5. Step 5: Solve for x
    x = 74,333,396.64/8,376
  6. Step 6: Final answer
    x = 8,874.57

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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.