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Finding the Fourth Proportional to 8,532.72, 12,801.36 and 2,689.44

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Solution

The fourth proportional to 8,532.72, 12,801.36 and 2,689.44 is: 4,034.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,532.72 : 12,801.36 = 2,689.44 : x
  2. Step 2: Convert to fraction form
    8,532.72/12,801.36 = 2,689.44/x
  3. Step 3: Cross multiply
    8,532.72x = 12,801.36 × 2,689.44
  4. Step 4: Simplify right side
    8,532.72x = 34,428,489.64
  5. Step 5: Solve for x
    x = 34,428,489.64/8,532.72
  6. Step 6: Final answer
    x = 4,034.88

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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.