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Finding the Fourth Proportional to 8,655.32, 12,983.49 and 2,732.40

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Solution

The fourth proportional to 8,655.32, 12,983.49 and 2,732.40 is: 4,098.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.32 : 12,983.49 = 2,732.40 : x
  2. Step 2: Convert to fraction form
    8,655.32/12,983.49 = 2,732.40/x
  3. Step 3: Cross multiply
    8,655.32x = 12,983.49 × 2,732.40
  4. Step 4: Simplify right side
    8,655.32x = 35,476,023.16
  5. Step 5: Solve for x
    x = 35,476,023.16/8,655.32
  6. Step 6: Final answer
    x = 4,098.76

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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.