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Finding the Third Proportional to 2,819 and 3,873

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Solution

The third proportional to 2,819 and 3,873 is: 5,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819 : 3,873 = 3,873 : x
  2. Step 2: Convert to fraction form
    2,819/3,873 = 3,873/x
  3. Step 3: Cross multiply
    2,819x = 3,873 × 3,873
  4. Step 4: Simplify right side
    2,819x = 15,000,129
  5. Step 5: Solve for x
    x = 15,000,129/2,819
  6. Step 6: Final answer
    x = 5,321.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.