Home / 3,131.20-4,693.92-1,488.52

Finding the Fourth Proportional to 3,131.20, 4,693.92 and 1,488.52

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Solution

The fourth proportional to 3,131.20, 4,693.92 and 1,488.52 is: 2,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.20 : 4,693.92 = 1,488.52 : x
  2. Step 2: Convert to fraction form
    3,131.20/4,693.92 = 1,488.52/x
  3. Step 3: Cross multiply
    3,131.20x = 4,693.92 × 1,488.52
  4. Step 4: Simplify right side
    3,131.20x = 6,986,993.80
  5. Step 5: Solve for x
    x = 6,986,993.80/3,131.20
  6. Step 6: Final answer
    x = 2,231.41

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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.