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Finding the Third Proportional to 7,740 and 16,372

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Solution

The third proportional to 7,740 and 16,372 is: 34,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740 : 16,372 = 16,372 : x
  2. Step 2: Convert to fraction form
    7,740/16,372 = 16,372/x
  3. Step 3: Cross multiply
    7,740x = 16,372 × 16,372
  4. Step 4: Simplify right side
    7,740x = 268,042,384
  5. Step 5: Solve for x
    x = 268,042,384/7,740
  6. Step 6: Final answer
    x = 34,630.80

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.