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Finding the Third Proportional to 2,909 and 4,354

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Solution

The third proportional to 2,909 and 4,354 is: 6,516.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909 : 4,354 = 4,354 : x
  2. Step 2: Convert to fraction form
    2,909/4,354 = 4,354/x
  3. Step 3: Cross multiply
    2,909x = 4,354 × 4,354
  4. Step 4: Simplify right side
    2,909x = 18,957,316
  5. Step 5: Solve for x
    x = 18,957,316/2,909
  6. Step 6: Final answer
    x = 6,516.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.