Home / 3,939.12-5,908.68-1,342.26

Finding the Fourth Proportional to 3,939.12, 5,908.68 and 1,342.26

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Solution

The fourth proportional to 3,939.12, 5,908.68 and 1,342.26 is: 2,013.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.12 : 5,908.68 = 1,342.26 : x
  2. Step 2: Convert to fraction form
    3,939.12/5,908.68 = 1,342.26/x
  3. Step 3: Cross multiply
    3,939.12x = 5,908.68 × 1,342.26
  4. Step 4: Simplify right side
    3,939.12x = 7,930,984.82
  5. Step 5: Solve for x
    x = 7,930,984.82/3,939.12
  6. Step 6: Final answer
    x = 2,013.39

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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.