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Finding the Third Proportional to 2,660 and 5,374

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Solution

The third proportional to 2,660 and 5,374 is: 10,857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660 : 5,374 = 5,374 : x
  2. Step 2: Convert to fraction form
    2,660/5,374 = 5,374/x
  3. Step 3: Cross multiply
    2,660x = 5,374 × 5,374
  4. Step 4: Simplify right side
    2,660x = 28,879,876
  5. Step 5: Solve for x
    x = 28,879,876/2,660
  6. Step 6: Final answer
    x = 10,857.10

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.