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Finding the Fourth Proportional to 6,891.88, 10,338.90 and 3,197.92

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Solution

The fourth proportional to 6,891.88, 10,338.90 and 3,197.92 is: 4,797.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.88 : 10,338.90 = 3,197.92 : x
  2. Step 2: Convert to fraction form
    6,891.88/10,338.90 = 3,197.92/x
  3. Step 3: Cross multiply
    6,891.88x = 10,338.90 × 3,197.92
  4. Step 4: Simplify right side
    6,891.88x = 33,062,975.09
  5. Step 5: Solve for x
    x = 33,062,975.09/6,891.88
  6. Step 6: Final answer
    x = 4,797.38

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1.5x scale

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.