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Finding the Third Proportional to 2,170 and 2,908

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Solution

The third proportional to 2,170 and 2,908 is: 3,896.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170 : 2,908 = 2,908 : x
  2. Step 2: Convert to fraction form
    2,170/2,908 = 2,908/x
  3. Step 3: Cross multiply
    2,170x = 2,908 × 2,908
  4. Step 4: Simplify right side
    2,170x = 8,456,464
  5. Step 5: Solve for x
    x = 8,456,464/2,170
  6. Step 6: Final answer
    x = 3,896.99

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.