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Finding the Third Proportional to 7,859 and 17,122

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Solution

The third proportional to 7,859 and 17,122 is: 37,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859 : 17,122 = 17,122 : x
  2. Step 2: Convert to fraction form
    7,859/17,122 = 17,122/x
  3. Step 3: Cross multiply
    7,859x = 17,122 × 17,122
  4. Step 4: Simplify right side
    7,859x = 293,162,884
  5. Step 5: Solve for x
    x = 293,162,884/7,859
  6. Step 6: Final answer
    x = 37,302.82

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.