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Finding the Third Proportional to 7,839 and 18,495

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Solution

The third proportional to 7,839 and 18,495 is: 43,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839 : 18,495 = 18,495 : x
  2. Step 2: Convert to fraction form
    7,839/18,495 = 18,495/x
  3. Step 3: Cross multiply
    7,839x = 18,495 × 18,495
  4. Step 4: Simplify right side
    7,839x = 342,065,025
  5. Step 5: Solve for x
    x = 342,065,025/7,839
  6. Step 6: Final answer
    x = 43,636.31

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.