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Finding the Third Proportional to 2,909 and 3,783

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Solution

The third proportional to 2,909 and 3,783 is: 4,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909 : 3,783 = 3,783 : x
  2. Step 2: Convert to fraction form
    2,909/3,783 = 3,783/x
  3. Step 3: Cross multiply
    2,909x = 3,783 × 3,783
  4. Step 4: Simplify right side
    2,909x = 14,311,089
  5. Step 5: Solve for x
    x = 14,311,089/2,909
  6. Step 6: Final answer
    x = 4,919.59

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.