Home / 8,131.11-12,193.61-3,198.05

Finding the Fourth Proportional to 8,131.11, 12,193.61 and 3,198.05

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Solution

The fourth proportional to 8,131.11, 12,193.61 and 3,198.05 is: 4,795.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.11 : 12,193.61 = 3,198.05 : x
  2. Step 2: Convert to fraction form
    8,131.11/12,193.61 = 3,198.05/x
  3. Step 3: Cross multiply
    8,131.11x = 12,193.61 × 3,198.05
  4. Step 4: Simplify right side
    8,131.11x = 38,995,788.95
  5. Step 5: Solve for x
    x = 38,995,788.95/8,131.11
  6. Step 6: Final answer
    x = 4,795.88

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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.