Home / 3,404.20-5,107.20-1,212.70

Finding the Fourth Proportional to 3,404.20, 5,107.20 and 1,212.70

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Solution

The fourth proportional to 3,404.20, 5,107.20 and 1,212.70 is: 1,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.20 : 5,107.20 = 1,212.70 : x
  2. Step 2: Convert to fraction form
    3,404.20/5,107.20 = 1,212.70/x
  3. Step 3: Cross multiply
    3,404.20x = 5,107.20 × 1,212.70
  4. Step 4: Simplify right side
    3,404.20x = 6,193,501.44
  5. Step 5: Solve for x
    x = 6,193,501.44/3,404.20
  6. Step 6: Final answer
    x = 1,819.37

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1.5x scale

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.