Home / 8,169.11-12,232.80-5,387.38

Finding the Fourth Proportional to 8,169.11, 12,232.80 and 5,387.38

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Solution

The fourth proportional to 8,169.11, 12,232.80 and 5,387.38 is: 8,067.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.11 : 12,232.80 = 5,387.38 : x
  2. Step 2: Convert to fraction form
    8,169.11/12,232.80 = 5,387.38/x
  3. Step 3: Cross multiply
    8,169.11x = 12,232.80 × 5,387.38
  4. Step 4: Simplify right side
    8,169.11x = 65,902,742.06
  5. Step 5: Solve for x
    x = 65,902,742.06/8,169.11
  6. Step 6: Final answer
    x = 8,067.31

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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.