Home / 8,149.35-12,226.61-3,989.80

Finding the Fourth Proportional to 8,149.35, 12,226.61 and 3,989.80

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Solution

The fourth proportional to 8,149.35, 12,226.61 and 3,989.80 is: 5,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.35 : 12,226.61 = 3,989.80 : x
  2. Step 2: Convert to fraction form
    8,149.35/12,226.61 = 3,989.80/x
  3. Step 3: Cross multiply
    8,149.35x = 12,226.61 × 3,989.80
  4. Step 4: Simplify right side
    8,149.35x = 48,781,753.84
  5. Step 5: Solve for x
    x = 48,781,753.84/8,149.35
  6. Step 6: Final answer
    x = 5,985.97

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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.