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Finding the Fourth Proportional to 8,867.10, 13,251.64 and 8,354.97

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Solution

The fourth proportional to 8,867.10, 13,251.64 and 8,354.97 is: 12,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.10 : 13,251.64 = 8,354.97 : x
  2. Step 2: Convert to fraction form
    8,867.10/13,251.64 = 8,354.97/x
  3. Step 3: Cross multiply
    8,867.10x = 13,251.64 × 8,354.97
  4. Step 4: Simplify right side
    8,867.10x = 110,717,033.76
  5. Step 5: Solve for x
    x = 110,717,033.76/8,867.10
  6. Step 6: Final answer
    x = 12,486.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.