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Finding the Third Proportional to 6,919 and 10,731

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Solution

The third proportional to 6,919 and 10,731 is: 16,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919 : 10,731 = 10,731 : x
  2. Step 2: Convert to fraction form
    6,919/10,731 = 10,731/x
  3. Step 3: Cross multiply
    6,919x = 10,731 × 10,731
  4. Step 4: Simplify right side
    6,919x = 115,154,361
  5. Step 5: Solve for x
    x = 115,154,361/6,919
  6. Step 6: Final answer
    x = 16,643.21

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.