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Finding the Third Proportional to 7,802 and 17,921

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Solution

The third proportional to 7,802 and 17,921 is: 41,164.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,802 : 17,921 = 17,921 : x
  2. Step 2: Convert to fraction form
    7,802/17,921 = 17,921/x
  3. Step 3: Cross multiply
    7,802x = 17,921 × 17,921
  4. Step 4: Simplify right side
    7,802x = 321,162,241
  5. Step 5: Solve for x
    x = 321,162,241/7,802
  6. Step 6: Final answer
    x = 41,164.09

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.