Home / 3,843.32-5,765.82-1,378.28

Finding the Fourth Proportional to 3,843.32, 5,765.82 and 1,378.28

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Solution

The fourth proportional to 3,843.32, 5,765.82 and 1,378.28 is: 2,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.32 : 5,765.82 = 1,378.28 : x
  2. Step 2: Convert to fraction form
    3,843.32/5,765.82 = 1,378.28/x
  3. Step 3: Cross multiply
    3,843.32x = 5,765.82 × 1,378.28
  4. Step 4: Simplify right side
    3,843.32x = 7,946,914.39
  5. Step 5: Solve for x
    x = 7,946,914.39/3,843.32
  6. Step 6: Final answer
    x = 2,067.72

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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.