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Finding the Third Proportional to 2,812 and 4,281

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Solution

The third proportional to 2,812 and 4,281 is: 6,517.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812 : 4,281 = 4,281 : x
  2. Step 2: Convert to fraction form
    2,812/4,281 = 4,281/x
  3. Step 3: Cross multiply
    2,812x = 4,281 × 4,281
  4. Step 4: Simplify right side
    2,812x = 18,326,961
  5. Step 5: Solve for x
    x = 18,326,961/2,812
  6. Step 6: Final answer
    x = 6,517.41

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.