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Finding the Fourth Proportional to 6,906.88, 10,357.44 and 2,800

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Solution

The fourth proportional to 6,906.88, 10,357.44 and 2,800 is: 4,198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,906.88 : 10,357.44 = 2,800 : x
  2. Step 2: Convert to fraction form
    6,906.88/10,357.44 = 2,800/x
  3. Step 3: Cross multiply
    6,906.88x = 10,357.44 × 2,800
  4. Step 4: Simplify right side
    6,906.88x = 29,000,832
  5. Step 5: Solve for x
    x = 29,000,832/6,906.88
  6. Step 6: Final answer
    x = 4,198.83

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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.