Home / 3,403.68-5,105.92-1,212.72

Finding the Fourth Proportional to 3,403.68, 5,105.92 and 1,212.72

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Solution

The fourth proportional to 3,403.68, 5,105.92 and 1,212.72 is: 1,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.68 : 5,105.92 = 1,212.72 : x
  2. Step 2: Convert to fraction form
    3,403.68/5,105.92 = 1,212.72/x
  3. Step 3: Cross multiply
    3,403.68x = 5,105.92 × 1,212.72
  4. Step 4: Simplify right side
    3,403.68x = 6,192,051.30
  5. Step 5: Solve for x
    x = 6,192,051.30/3,403.68
  6. Step 6: Final answer
    x = 1,819.22

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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.