Home / 3,989.19-5,983.29-1,067.70

Finding the Fourth Proportional to 3,989.19, 5,983.29 and 1,067.70

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Solution

The fourth proportional to 3,989.19, 5,983.29 and 1,067.70 is: 1,601.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.19 : 5,983.29 = 1,067.70 : x
  2. Step 2: Convert to fraction form
    3,989.19/5,983.29 = 1,067.70/x
  3. Step 3: Cross multiply
    3,989.19x = 5,983.29 × 1,067.70
  4. Step 4: Simplify right side
    3,989.19x = 6,388,358.73
  5. Step 5: Solve for x
    x = 6,388,358.73/3,989.19
  6. Step 6: Final answer
    x = 1,601.42

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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.