Home / 8,115.92-12,149.04-5,197.04

Finding the Fourth Proportional to 8,115.92, 12,149.04 and 5,197.04

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Solution

The fourth proportional to 8,115.92, 12,149.04 and 5,197.04 is: 7,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.92 : 12,149.04 = 5,197.04 : x
  2. Step 2: Convert to fraction form
    8,115.92/12,149.04 = 5,197.04/x
  3. Step 3: Cross multiply
    8,115.92x = 12,149.04 × 5,197.04
  4. Step 4: Simplify right side
    8,115.92x = 63,139,046.84
  5. Step 5: Solve for x
    x = 63,139,046.84/8,115.92
  6. Step 6: Final answer
    x = 7,779.65

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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.