Home / 8,519.82-12,771.09-5,398.86

Finding the Fourth Proportional to 8,519.82, 12,771.09 and 5,398.86

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Solution

The fourth proportional to 8,519.82, 12,771.09 and 5,398.86 is: 8,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.82 : 12,771.09 = 5,398.86 : x
  2. Step 2: Convert to fraction form
    8,519.82/12,771.09 = 5,398.86/x
  3. Step 3: Cross multiply
    8,519.82x = 12,771.09 × 5,398.86
  4. Step 4: Simplify right side
    8,519.82x = 68,949,326.96
  5. Step 5: Solve for x
    x = 68,949,326.96/8,519.82
  6. Step 6: Final answer
    x = 8,092.81

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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.