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Finding the Third Proportional to 3,943 and 8,289

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Solution

The third proportional to 3,943 and 8,289 is: 17,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943 : 8,289 = 8,289 : x
  2. Step 2: Convert to fraction form
    3,943/8,289 = 8,289/x
  3. Step 3: Cross multiply
    3,943x = 8,289 × 8,289
  4. Step 4: Simplify right side
    3,943x = 68,707,521
  5. Step 5: Solve for x
    x = 68,707,521/3,943
  6. Step 6: Final answer
    x = 17,425.19

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.