Home / 11,791.22-17,688.72-3,891.44

Finding the Fourth Proportional to 11,791.22, 17,688.72 and 3,891.44

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Solution

The fourth proportional to 11,791.22, 17,688.72 and 3,891.44 is: 5,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.22 : 17,688.72 = 3,891.44 : x
  2. Step 2: Convert to fraction form
    11,791.22/17,688.72 = 3,891.44/x
  3. Step 3: Cross multiply
    11,791.22x = 17,688.72 × 3,891.44
  4. Step 4: Simplify right side
    11,791.22x = 68,834,592.56
  5. Step 5: Solve for x
    x = 68,834,592.56/11,791.22
  6. Step 6: Final answer
    x = 5,837.78

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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.