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Finding the Third Proportional to 1,975 and 3,181

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Solution

The third proportional to 1,975 and 3,181 is: 5,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975 : 3,181 = 3,181 : x
  2. Step 2: Convert to fraction form
    1,975/3,181 = 3,181/x
  3. Step 3: Cross multiply
    1,975x = 3,181 × 3,181
  4. Step 4: Simplify right side
    1,975x = 10,118,761
  5. Step 5: Solve for x
    x = 10,118,761/1,975
  6. Step 6: Final answer
    x = 5,123.42

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.