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Finding the Third Proportional to 2,142 and 3,437

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Solution

The third proportional to 2,142 and 3,437 is: 5,514.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142 : 3,437 = 3,437 : x
  2. Step 2: Convert to fraction form
    2,142/3,437 = 3,437/x
  3. Step 3: Cross multiply
    2,142x = 3,437 × 3,437
  4. Step 4: Simplify right side
    2,142x = 11,812,969
  5. Step 5: Solve for x
    x = 11,812,969/2,142
  6. Step 6: Final answer
    x = 5,514.92

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.