Home / 3,921.80-5,882.66-1,324.72

Finding the Fourth Proportional to 3,921.80, 5,882.66 and 1,324.72

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Solution

The fourth proportional to 3,921.80, 5,882.66 and 1,324.72 is: 1,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.80 : 5,882.66 = 1,324.72 : x
  2. Step 2: Convert to fraction form
    3,921.80/5,882.66 = 1,324.72/x
  3. Step 3: Cross multiply
    3,921.80x = 5,882.66 × 1,324.72
  4. Step 4: Simplify right side
    3,921.80x = 7,792,877.36
  5. Step 5: Solve for x
    x = 7,792,877.36/3,921.80
  6. Step 6: Final answer
    x = 1,987.07

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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.