Home / 5,092.72-7,641.26-2,131.86

Finding the Fourth Proportional to 5,092.72, 7,641.26 and 2,131.86

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Solution

The fourth proportional to 5,092.72, 7,641.26 and 2,131.86 is: 3,198.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,092.72 : 7,641.26 = 2,131.86 : x
  2. Step 2: Convert to fraction form
    5,092.72/7,641.26 = 2,131.86/x
  3. Step 3: Cross multiply
    5,092.72x = 7,641.26 × 2,131.86
  4. Step 4: Simplify right side
    5,092.72x = 16,290,055.97
  5. Step 5: Solve for x
    x = 16,290,055.97/5,092.72
  6. Step 6: Final answer
    x = 3,198.69

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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.