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Finding the Third Proportional to 2,387 and 3,165

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Solution

The third proportional to 2,387 and 3,165 is: 4,196.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387 : 3,165 = 3,165 : x
  2. Step 2: Convert to fraction form
    2,387/3,165 = 3,165/x
  3. Step 3: Cross multiply
    2,387x = 3,165 × 3,165
  4. Step 4: Simplify right side
    2,387x = 10,017,225
  5. Step 5: Solve for x
    x = 10,017,225/2,387
  6. Step 6: Final answer
    x = 4,196.58

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.