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Finding the Fourth Proportional to 7,924.72, 11,883.24 and 3,974.28

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Solution

The fourth proportional to 7,924.72, 11,883.24 and 3,974.28 is: 5,959.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.72 : 11,883.24 = 3,974.28 : x
  2. Step 2: Convert to fraction form
    7,924.72/11,883.24 = 3,974.28/x
  3. Step 3: Cross multiply
    7,924.72x = 11,883.24 × 3,974.28
  4. Step 4: Simplify right side
    7,924.72x = 47,227,323.07
  5. Step 5: Solve for x
    x = 47,227,323.07/7,924.72
  6. Step 6: Final answer
    x = 5,959.49

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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.