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Finding the Third Proportional to 2,831 and 6,238

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Solution

The third proportional to 2,831 and 6,238 is: 13,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831 : 6,238 = 6,238 : x
  2. Step 2: Convert to fraction form
    2,831/6,238 = 6,238/x
  3. Step 3: Cross multiply
    2,831x = 6,238 × 6,238
  4. Step 4: Simplify right side
    2,831x = 38,912,644
  5. Step 5: Solve for x
    x = 38,912,644/2,831
  6. Step 6: Final answer
    x = 13,745.19

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.