Home / 8,115.08-12,170.70-3,729.80

Finding the Fourth Proportional to 8,115.08, 12,170.70 and 3,729.80

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Solution

The fourth proportional to 8,115.08, 12,170.70 and 3,729.80 is: 5,593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.08 : 12,170.70 = 3,729.80 : x
  2. Step 2: Convert to fraction form
    8,115.08/12,170.70 = 3,729.80/x
  3. Step 3: Cross multiply
    8,115.08x = 12,170.70 × 3,729.80
  4. Step 4: Simplify right side
    8,115.08x = 45,394,276.86
  5. Step 5: Solve for x
    x = 45,394,276.86/8,115.08
  6. Step 6: Final answer
    x = 5,593.82

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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.