Home / 8,115.17-12,173.12-3,958.61

Finding the Fourth Proportional to 8,115.17, 12,173.12 and 3,958.61

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Solution

The fourth proportional to 8,115.17, 12,173.12 and 3,958.61 is: 5,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.17 : 12,173.12 = 3,958.61 : x
  2. Step 2: Convert to fraction form
    8,115.17/12,173.12 = 3,958.61/x
  3. Step 3: Cross multiply
    8,115.17x = 12,173.12 × 3,958.61
  4. Step 4: Simplify right side
    8,115.17x = 48,188,614.77
  5. Step 5: Solve for x
    x = 48,188,614.77/8,115.17
  6. Step 6: Final answer
    x = 5,938.09

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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.