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Finding the Third Proportional to 4,980 and 10,376

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Solution

The third proportional to 4,980 and 10,376 is: 21,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980 : 10,376 = 10,376 : x
  2. Step 2: Convert to fraction form
    4,980/10,376 = 10,376/x
  3. Step 3: Cross multiply
    4,980x = 10,376 × 10,376
  4. Step 4: Simplify right side
    4,980x = 107,661,376
  5. Step 5: Solve for x
    x = 107,661,376/4,980
  6. Step 6: Final answer
    x = 21,618.75

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.