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Finding the Fourth Proportional to 8,753.28, 13,124.64 and 3,489.10

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Solution

The fourth proportional to 8,753.28, 13,124.64 and 3,489.10 is: 5,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.28 : 13,124.64 = 3,489.10 : x
  2. Step 2: Convert to fraction form
    8,753.28/13,124.64 = 3,489.10/x
  3. Step 3: Cross multiply
    8,753.28x = 13,124.64 × 3,489.10
  4. Step 4: Simplify right side
    8,753.28x = 45,793,181.42
  5. Step 5: Solve for x
    x = 45,793,181.42/8,753.28
  6. Step 6: Final answer
    x = 5,231.55

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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.