Home / 7,972.62-11,958.09-2,129.82

Finding the Fourth Proportional to 7,972.62, 11,958.09 and 2,129.82

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Solution

The fourth proportional to 7,972.62, 11,958.09 and 2,129.82 is: 3,194.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.62 : 11,958.09 = 2,129.82 : x
  2. Step 2: Convert to fraction form
    7,972.62/11,958.09 = 2,129.82/x
  3. Step 3: Cross multiply
    7,972.62x = 11,958.09 × 2,129.82
  4. Step 4: Simplify right side
    7,972.62x = 25,468,579.24
  5. Step 5: Solve for x
    x = 25,468,579.24/7,972.62
  6. Step 6: Final answer
    x = 3,194.51

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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.