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Finding the Fourth Proportional to 8,732.70, 13,098.92 and 2,158.89

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Solution

The fourth proportional to 8,732.70, 13,098.92 and 2,158.89 is: 3,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,732.70 : 13,098.92 = 2,158.89 : x
  2. Step 2: Convert to fraction form
    8,732.70/13,098.92 = 2,158.89/x
  3. Step 3: Cross multiply
    8,732.70x = 13,098.92 × 2,158.89
  4. Step 4: Simplify right side
    8,732.70x = 28,279,127.40
  5. Step 5: Solve for x
    x = 28,279,127.40/8,732.70
  6. Step 6: Final answer
    x = 3,238.30

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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.