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Finding the Fourth Proportional to 8,658.97, 12,997.64 and 7,035.12

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Solution

The fourth proportional to 8,658.97, 12,997.64 and 7,035.12 is: 10,560.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.97 : 12,997.64 = 7,035.12 : x
  2. Step 2: Convert to fraction form
    8,658.97/12,997.64 = 7,035.12/x
  3. Step 3: Cross multiply
    8,658.97x = 12,997.64 × 7,035.12
  4. Step 4: Simplify right side
    8,658.97x = 91,439,974.70
  5. Step 5: Solve for x
    x = 91,439,974.70/8,658.97
  6. Step 6: Final answer
    x = 10,560.15

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1.5x scale

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.