Home / 7,179.11-9,906.67-3,992.15

Finding the Fourth Proportional to 7,179.11, 9,906.67 and 3,992.15

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Solution

The fourth proportional to 7,179.11, 9,906.67 and 3,992.15 is: 5,508.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.11 : 9,906.67 = 3,992.15 : x
  2. Step 2: Convert to fraction form
    7,179.11/9,906.67 = 3,992.15/x
  3. Step 3: Cross multiply
    7,179.11x = 9,906.67 × 3,992.15
  4. Step 4: Simplify right side
    7,179.11x = 39,548,843.15
  5. Step 5: Solve for x
    x = 39,548,843.15/7,179.11
  6. Step 6: Final answer
    x = 5,508.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.