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Finding the Third Proportional to 2,187 and 3,176

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Solution

The third proportional to 2,187 and 3,176 is: 4,612.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187 : 3,176 = 3,176 : x
  2. Step 2: Convert to fraction form
    2,187/3,176 = 3,176/x
  3. Step 3: Cross multiply
    2,187x = 3,176 × 3,176
  4. Step 4: Simplify right side
    2,187x = 10,086,976
  5. Step 5: Solve for x
    x = 10,086,976/2,187
  6. Step 6: Final answer
    x = 4,612.24

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.