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Finding the Fourth Proportional to 6,937.75, 10,404.90 and 2,721.86

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Solution

The fourth proportional to 6,937.75, 10,404.90 and 2,721.86 is: 4,082.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,937.75 : 10,404.90 = 2,721.86 : x
  2. Step 2: Convert to fraction form
    6,937.75/10,404.90 = 2,721.86/x
  3. Step 3: Cross multiply
    6,937.75x = 10,404.90 × 2,721.86
  4. Step 4: Simplify right side
    6,937.75x = 28,320,667.50
  5. Step 5: Solve for x
    x = 28,320,667.50/6,937.75
  6. Step 6: Final answer
    x = 4,082.11

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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.