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Finding the Fourth Proportional to 3,886.71, 5,363.39 and 2,207.96

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Solution

The fourth proportional to 3,886.71, 5,363.39 and 2,207.96 is: 3,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.71 : 5,363.39 = 2,207.96 : x
  2. Step 2: Convert to fraction form
    3,886.71/5,363.39 = 2,207.96/x
  3. Step 3: Cross multiply
    3,886.71x = 5,363.39 × 2,207.96
  4. Step 4: Simplify right side
    3,886.71x = 11,842,143.19
  5. Step 5: Solve for x
    x = 11,842,143.19/3,886.71
  6. Step 6: Final answer
    x = 3,046.83

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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.