Home / 8,138.28-12,200.58-5,665.80

Finding the Fourth Proportional to 8,138.28, 12,200.58 and 5,665.80

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Solution

The fourth proportional to 8,138.28, 12,200.58 and 5,665.80 is: 8,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.28 : 12,200.58 = 5,665.80 : x
  2. Step 2: Convert to fraction form
    8,138.28/12,200.58 = 5,665.80/x
  3. Step 3: Cross multiply
    8,138.28x = 12,200.58 × 5,665.80
  4. Step 4: Simplify right side
    8,138.28x = 69,126,046.16
  5. Step 5: Solve for x
    x = 69,126,046.16/8,138.28
  6. Step 6: Final answer
    x = 8,493.94

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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.