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Finding the Third Proportional to 959 and 2,122.75

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Solution

The third proportional to 959 and 2,122.75 is: 4,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    959 : 2,122.75 = 2,122.75 : x
  2. Step 2: Convert to fraction form
    959/2,122.75 = 2,122.75/x
  3. Step 3: Cross multiply
    959x = 2,122.75 × 2,122.75
  4. Step 4: Simplify right side
    959x = 4,506,067.56
  5. Step 5: Solve for x
    x = 4,506,067.56/959
  6. Step 6: Final answer
    x = 4,698.71

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.