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Finding the Fourth Proportional to 6,908.80, 10,363.88 and 2,747.88

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Solution

The fourth proportional to 6,908.80, 10,363.88 and 2,747.88 is: 4,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,908.80 : 10,363.88 = 2,747.88 : x
  2. Step 2: Convert to fraction form
    6,908.80/10,363.88 = 2,747.88/x
  3. Step 3: Cross multiply
    6,908.80x = 10,363.88 × 2,747.88
  4. Step 4: Simplify right side
    6,908.80x = 28,478,698.57
  5. Step 5: Solve for x
    x = 28,478,698.57/6,908.80
  6. Step 6: Final answer
    x = 4,122.09

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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.