Home / 7,942.82-11,906.48-3,781.71

Finding the Fourth Proportional to 7,942.82, 11,906.48 and 3,781.71

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Solution

The fourth proportional to 7,942.82, 11,906.48 and 3,781.71 is: 5,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.82 : 11,906.48 = 3,781.71 : x
  2. Step 2: Convert to fraction form
    7,942.82/11,906.48 = 3,781.71/x
  3. Step 3: Cross multiply
    7,942.82x = 11,906.48 × 3,781.71
  4. Step 4: Simplify right side
    7,942.82x = 45,026,863.94
  5. Step 5: Solve for x
    x = 45,026,863.94/7,942.82
  6. Step 6: Final answer
    x = 5,668.88

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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.