Home / 3,432.20-5,146.38-1,379.72

Finding the Fourth Proportional to 3,432.20, 5,146.38 and 1,379.72

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Solution

The fourth proportional to 3,432.20, 5,146.38 and 1,379.72 is: 2,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.20 : 5,146.38 = 1,379.72 : x
  2. Step 2: Convert to fraction form
    3,432.20/5,146.38 = 1,379.72/x
  3. Step 3: Cross multiply
    3,432.20x = 5,146.38 × 1,379.72
  4. Step 4: Simplify right side
    3,432.20x = 7,100,563.41
  5. Step 5: Solve for x
    x = 7,100,563.41/3,432.20
  6. Step 6: Final answer
    x = 2,068.81

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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.