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Finding the Third Proportional to 7,872 and 18,714

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Solution

The third proportional to 7,872 and 18,714 is: 44,488.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872 : 18,714 = 18,714 : x
  2. Step 2: Convert to fraction form
    7,872/18,714 = 18,714/x
  3. Step 3: Cross multiply
    7,872x = 18,714 × 18,714
  4. Step 4: Simplify right side
    7,872x = 350,213,796
  5. Step 5: Solve for x
    x = 350,213,796/7,872
  6. Step 6: Final answer
    x = 44,488.54

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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.