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Finding the Third Proportional to 1,379 and 2,900

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Solution

The third proportional to 1,379 and 2,900 is: 6,098.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379 : 2,900 = 2,900 : x
  2. Step 2: Convert to fraction form
    1,379/2,900 = 2,900/x
  3. Step 3: Cross multiply
    1,379x = 2,900 × 2,900
  4. Step 4: Simplify right side
    1,379x = 8,410,000
  5. Step 5: Solve for x
    x = 8,410,000/1,379
  6. Step 6: Final answer
    x = 6,098.62

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.