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Finding the Fourth Proportional to 8,489.39, 12,727.70 and 3,560.44

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Solution

The fourth proportional to 8,489.39, 12,727.70 and 3,560.44 is: 5,337.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.39 : 12,727.70 = 3,560.44 : x
  2. Step 2: Convert to fraction form
    8,489.39/12,727.70 = 3,560.44/x
  3. Step 3: Cross multiply
    8,489.39x = 12,727.70 × 3,560.44
  4. Step 4: Simplify right side
    8,489.39x = 45,316,130.75
  5. Step 5: Solve for x
    x = 45,316,130.75/8,489.39
  6. Step 6: Final answer
    x = 5,337.97

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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.