Home / 8,645.20-12,961.87-3,098.42

Finding the Fourth Proportional to 8,645.20, 12,961.87 and 3,098.42

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Solution

The fourth proportional to 8,645.20, 12,961.87 and 3,098.42 is: 4,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.20 : 12,961.87 = 3,098.42 : x
  2. Step 2: Convert to fraction form
    8,645.20/12,961.87 = 3,098.42/x
  3. Step 3: Cross multiply
    8,645.20x = 12,961.87 × 3,098.42
  4. Step 4: Simplify right side
    8,645.20x = 40,161,310.73
  5. Step 5: Solve for x
    x = 40,161,310.73/8,645.20
  6. Step 6: Final answer
    x = 4,645.51

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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.