Home / 7,974.62-11,961.09-2,131.82

Finding the Fourth Proportional to 7,974.62, 11,961.09 and 2,131.82

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Solution

The fourth proportional to 7,974.62, 11,961.09 and 2,131.82 is: 3,197.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.62 : 11,961.09 = 2,131.82 : x
  2. Step 2: Convert to fraction form
    7,974.62/11,961.09 = 2,131.82/x
  3. Step 3: Cross multiply
    7,974.62x = 11,961.09 × 2,131.82
  4. Step 4: Simplify right side
    7,974.62x = 25,498,890.88
  5. Step 5: Solve for x
    x = 25,498,890.88/7,974.62
  6. Step 6: Final answer
    x = 3,197.51

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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.