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Finding the Fourth Proportional to 8,489.82, 12,732.90 and 5,325.73

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Solution

The fourth proportional to 8,489.82, 12,732.90 and 5,325.73 is: 7,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.82 : 12,732.90 = 5,325.73 : x
  2. Step 2: Convert to fraction form
    8,489.82/12,732.90 = 5,325.73/x
  3. Step 3: Cross multiply
    8,489.82x = 12,732.90 × 5,325.73
  4. Step 4: Simplify right side
    8,489.82x = 67,812,000.83
  5. Step 5: Solve for x
    x = 67,812,000.83/8,489.82
  6. Step 6: Final answer
    x = 7,987.45

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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.