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Finding the Third Proportional to 3,105 and 6,319

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Solution

The third proportional to 3,105 and 6,319 is: 12,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105 : 6,319 = 6,319 : x
  2. Step 2: Convert to fraction form
    3,105/6,319 = 6,319/x
  3. Step 3: Cross multiply
    3,105x = 6,319 × 6,319
  4. Step 4: Simplify right side
    3,105x = 39,929,761
  5. Step 5: Solve for x
    x = 39,929,761/3,105
  6. Step 6: Final answer
    x = 12,859.83

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.