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Finding the Fourth Proportional to 8,369.97, 12,565.89 and 7,079.64

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Solution

The fourth proportional to 8,369.97, 12,565.89 and 7,079.64 is: 10,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.97 : 12,565.89 = 7,079.64 : x
  2. Step 2: Convert to fraction form
    8,369.97/12,565.89 = 7,079.64/x
  3. Step 3: Cross multiply
    8,369.97x = 12,565.89 × 7,079.64
  4. Step 4: Simplify right side
    8,369.97x = 88,961,977.48
  5. Step 5: Solve for x
    x = 88,961,977.48/8,369.97
  6. Step 6: Final answer
    x = 10,628.71

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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.