Home / 3,138.82-4,331.61-1,722.52

Finding the Fourth Proportional to 3,138.82, 4,331.61 and 1,722.52

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Solution

The fourth proportional to 3,138.82, 4,331.61 and 1,722.52 is: 2,377.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.82 : 4,331.61 = 1,722.52 : x
  2. Step 2: Convert to fraction form
    3,138.82/4,331.61 = 1,722.52/x
  3. Step 3: Cross multiply
    3,138.82x = 4,331.61 × 1,722.52
  4. Step 4: Simplify right side
    3,138.82x = 7,461,265.91
  5. Step 5: Solve for x
    x = 7,461,265.91/3,138.82
  6. Step 6: Final answer
    x = 2,377.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.