Home / 3,886.31-5,363.34-2,207.79

Finding the Fourth Proportional to 3,886.31, 5,363.34 and 2,207.79

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Solution

The fourth proportional to 3,886.31, 5,363.34 and 2,207.79 is: 3,046.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.31 : 5,363.34 = 2,207.79 : x
  2. Step 2: Convert to fraction form
    3,886.31/5,363.34 = 2,207.79/x
  3. Step 3: Cross multiply
    3,886.31x = 5,363.34 × 2,207.79
  4. Step 4: Simplify right side
    3,886.31x = 11,841,126.35
  5. Step 5: Solve for x
    x = 11,841,126.35/3,886.31
  6. Step 6: Final answer
    x = 3,046.88

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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.