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Finding the Fourth Proportional to 3,965,708.92, 5,472,712.92 and 2,154,872.92

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Solution

The fourth proportional to 3,965,708.92, 5,472,712.92 and 2,154,872.92 is: 2,973,743.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965,708.92 : 5,472,712.92 = 2,154,872.92 : x
  2. Step 2: Convert to fraction form
    3,965,708.92/5,472,712.92 = 2,154,872.92/x
  3. Step 3: Cross multiply
    3,965,708.92x = 5,472,712.92 × 2,154,872.92
  4. Step 4: Simplify right side
    3,965,708.92x = 11,793,000,870,242.12
  5. Step 5: Solve for x
    x = 11,793,000,870,242.12/3,965,708.92
  6. Step 6: Final answer
    x = 2,973,743.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.