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Finding the Fourth Proportional to 3,843.05, 5,764.71 and 1,245.92

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Solution

The fourth proportional to 3,843.05, 5,764.71 and 1,245.92 is: 1,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.05 : 5,764.71 = 1,245.92 : x
  2. Step 2: Convert to fraction form
    3,843.05/5,764.71 = 1,245.92/x
  3. Step 3: Cross multiply
    3,843.05x = 5,764.71 × 1,245.92
  4. Step 4: Simplify right side
    3,843.05x = 7,182,367.48
  5. Step 5: Solve for x
    x = 7,182,367.48/3,843.05
  6. Step 6: Final answer
    x = 1,868.92

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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.