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Finding the Third Proportional to 7,739 and 18,455

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Solution

The third proportional to 7,739 and 18,455 is: 44,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739 : 18,455 = 18,455 : x
  2. Step 2: Convert to fraction form
    7,739/18,455 = 18,455/x
  3. Step 3: Cross multiply
    7,739x = 18,455 × 18,455
  4. Step 4: Simplify right side
    7,739x = 340,587,025
  5. Step 5: Solve for x
    x = 340,587,025/7,739
  6. Step 6: Final answer
    x = 44,009.18

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Why These Related Problems?

These problems maintain the same ratio (2.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.