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Finding the Third Proportional to 3,894 and 8,364

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Solution

The third proportional to 3,894 and 8,364 is: 17,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894 : 8,364 = 8,364 : x
  2. Step 2: Convert to fraction form
    3,894/8,364 = 8,364/x
  3. Step 3: Cross multiply
    3,894x = 8,364 × 8,364
  4. Step 4: Simplify right side
    3,894x = 69,956,496
  5. Step 5: Solve for x
    x = 69,956,496/3,894
  6. Step 6: Final answer
    x = 17,965.20

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.