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Finding the Fourth Proportional to 10,881.87, 16,322.82 and 3,956.91

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Solution

The fourth proportional to 10,881.87, 16,322.82 and 3,956.91 is: 5,935.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.87 : 16,322.82 = 3,956.91 : x
  2. Step 2: Convert to fraction form
    10,881.87/16,322.82 = 3,956.91/x
  3. Step 3: Cross multiply
    10,881.87x = 16,322.82 × 3,956.91
  4. Step 4: Simplify right side
    10,881.87x = 64,587,929.69
  5. Step 5: Solve for x
    x = 64,587,929.69/10,881.87
  6. Step 6: Final answer
    x = 5,935.37

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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.