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Finding the Third Proportional to 2,511 and 3,186

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Solution

The third proportional to 2,511 and 3,186 is: 4,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511 : 3,186 = 3,186 : x
  2. Step 2: Convert to fraction form
    2,511/3,186 = 3,186/x
  3. Step 3: Cross multiply
    2,511x = 3,186 × 3,186
  4. Step 4: Simplify right side
    2,511x = 10,150,596
  5. Step 5: Solve for x
    x = 10,150,596/2,511
  6. Step 6: Final answer
    x = 4,042.45

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.