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Finding the Third Proportional to 2,214 and 4,311

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Solution

The third proportional to 2,214 and 4,311 is: 8,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214 : 4,311 = 4,311 : x
  2. Step 2: Convert to fraction form
    2,214/4,311 = 4,311/x
  3. Step 3: Cross multiply
    2,214x = 4,311 × 4,311
  4. Step 4: Simplify right side
    2,214x = 18,584,721
  5. Step 5: Solve for x
    x = 18,584,721/2,214
  6. Step 6: Final answer
    x = 8,394.18

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.