Home / 3,939.28-5,903.52-3,821.02

Finding the Fourth Proportional to 3,939.28, 5,903.52 and 3,821.02

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Solution

The fourth proportional to 3,939.28, 5,903.52 and 3,821.02 is: 5,726.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.28 : 5,903.52 = 3,821.02 : x
  2. Step 2: Convert to fraction form
    3,939.28/5,903.52 = 3,821.02/x
  3. Step 3: Cross multiply
    3,939.28x = 5,903.52 × 3,821.02
  4. Step 4: Simplify right side
    3,939.28x = 22,557,467.99
  5. Step 5: Solve for x
    x = 22,557,467.99/3,939.28
  6. Step 6: Final answer
    x = 5,726.29

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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.