Home / 3,425.16-5,138.55-1,781.33

Finding the Fourth Proportional to 3,425.16, 5,138.55 and 1,781.33

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Solution

The fourth proportional to 3,425.16, 5,138.55 and 1,781.33 is: 2,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.16 : 5,138.55 = 1,781.33 : x
  2. Step 2: Convert to fraction form
    3,425.16/5,138.55 = 1,781.33/x
  3. Step 3: Cross multiply
    3,425.16x = 5,138.55 × 1,781.33
  4. Step 4: Simplify right side
    3,425.16x = 9,153,453.27
  5. Step 5: Solve for x
    x = 9,153,453.27/3,425.16
  6. Step 6: Final answer
    x = 2,672.42

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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.