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Finding the Third Proportional to 7,948 and 18,400

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Solution

The third proportional to 7,948 and 18,400 is: 42,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948 : 18,400 = 18,400 : x
  2. Step 2: Convert to fraction form
    7,948/18,400 = 18,400/x
  3. Step 3: Cross multiply
    7,948x = 18,400 × 18,400
  4. Step 4: Simplify right side
    7,948x = 338,560,000
  5. Step 5: Solve for x
    x = 338,560,000/7,948
  6. Step 6: Final answer
    x = 42,596.88

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.