Home / 4,313.20-6,451.80-3,928.72

Finding the Fourth Proportional to 4,313.20, 6,451.80 and 3,928.72

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Solution

The fourth proportional to 4,313.20, 6,451.80 and 3,928.72 is: 5,876.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,313.20 : 6,451.80 = 3,928.72 : x
  2. Step 2: Convert to fraction form
    4,313.20/6,451.80 = 3,928.72/x
  3. Step 3: Cross multiply
    4,313.20x = 6,451.80 × 3,928.72
  4. Step 4: Simplify right side
    4,313.20x = 25,347,315.70
  5. Step 5: Solve for x
    x = 25,347,315.70/4,313.20
  6. Step 6: Final answer
    x = 5,876.68

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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.