Home / 8,213.38-12,318.15-2,665.30

Finding the Fourth Proportional to 8,213.38, 12,318.15 and 2,665.30

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Solution

The fourth proportional to 8,213.38, 12,318.15 and 2,665.30 is: 3,997.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.38 : 12,318.15 = 2,665.30 : x
  2. Step 2: Convert to fraction form
    8,213.38/12,318.15 = 2,665.30/x
  3. Step 3: Cross multiply
    8,213.38x = 12,318.15 × 2,665.30
  4. Step 4: Simplify right side
    8,213.38x = 32,831,565.20
  5. Step 5: Solve for x
    x = 32,831,565.20/8,213.38
  6. Step 6: Final answer
    x = 3,997.33

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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.