Home / 3,939.68-5,910.24-1,631.36

Finding the Fourth Proportional to 3,939.68, 5,910.24 and 1,631.36

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Solution

The fourth proportional to 3,939.68, 5,910.24 and 1,631.36 is: 2,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.68 : 5,910.24 = 1,631.36 : x
  2. Step 2: Convert to fraction form
    3,939.68/5,910.24 = 1,631.36/x
  3. Step 3: Cross multiply
    3,939.68x = 5,910.24 × 1,631.36
  4. Step 4: Simplify right side
    3,939.68x = 9,641,729.13
  5. Step 5: Solve for x
    x = 9,641,729.13/3,939.68
  6. Step 6: Final answer
    x = 2,447.34

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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.