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Finding the Third Proportional to 3,180 and 3,276

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Solution

The third proportional to 3,180 and 3,276 is: 3,374.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180 : 3,276 = 3,276 : x
  2. Step 2: Convert to fraction form
    3,180/3,276 = 3,276/x
  3. Step 3: Cross multiply
    3,180x = 3,276 × 3,276
  4. Step 4: Simplify right side
    3,180x = 10,732,176
  5. Step 5: Solve for x
    x = 10,732,176/3,180
  6. Step 6: Final answer
    x = 3,374.90

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Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.