Home / 3,619.72-5,432.19-1,540.30

Finding the Fourth Proportional to 3,619.72, 5,432.19 and 1,540.30

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Solution

The fourth proportional to 3,619.72, 5,432.19 and 1,540.30 is: 2,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.72 : 5,432.19 = 1,540.30 : x
  2. Step 2: Convert to fraction form
    3,619.72/5,432.19 = 1,540.30/x
  3. Step 3: Cross multiply
    3,619.72x = 5,432.19 × 1,540.30
  4. Step 4: Simplify right side
    3,619.72x = 8,367,188.68
  5. Step 5: Solve for x
    x = 8,367,188.68/3,619.72
  6. Step 6: Final answer
    x = 2,311.56

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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.