Home / 3,212.88-4,819.20-2,271.96

Finding the Fourth Proportional to 3,212.88, 4,819.20 and 2,271.96

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Solution

The fourth proportional to 3,212.88, 4,819.20 and 2,271.96 is: 3,407.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.88 : 4,819.20 = 2,271.96 : x
  2. Step 2: Convert to fraction form
    3,212.88/4,819.20 = 2,271.96/x
  3. Step 3: Cross multiply
    3,212.88x = 4,819.20 × 2,271.96
  4. Step 4: Simplify right side
    3,212.88x = 10,949,029.63
  5. Step 5: Solve for x
    x = 10,949,029.63/3,212.88
  6. Step 6: Final answer
    x = 3,407.86

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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.