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Finding the Third Proportional to 3,229 and 3,890

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Solution

The third proportional to 3,229 and 3,890 is: 4,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229 : 3,890 = 3,890 : x
  2. Step 2: Convert to fraction form
    3,229/3,890 = 3,890/x
  3. Step 3: Cross multiply
    3,229x = 3,890 × 3,890
  4. Step 4: Simplify right side
    3,229x = 15,132,100
  5. Step 5: Solve for x
    x = 15,132,100/3,229
  6. Step 6: Final answer
    x = 4,686.31

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.