Home / 8,107.20-12,158.40-3,175.92

Finding the Fourth Proportional to 8,107.20, 12,158.40 and 3,175.92

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Solution

The fourth proportional to 8,107.20, 12,158.40 and 3,175.92 is: 4,762.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.20 : 12,158.40 = 3,175.92 : x
  2. Step 2: Convert to fraction form
    8,107.20/12,158.40 = 3,175.92/x
  3. Step 3: Cross multiply
    8,107.20x = 12,158.40 × 3,175.92
  4. Step 4: Simplify right side
    8,107.20x = 38,614,105.73
  5. Step 5: Solve for x
    x = 38,614,105.73/8,107.20
  6. Step 6: Final answer
    x = 4,762.94

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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.