Home / 3,419.20-5,129.70-1,227.70

Finding the Fourth Proportional to 3,419.20, 5,129.70 and 1,227.70

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Solution

The fourth proportional to 3,419.20, 5,129.70 and 1,227.70 is: 1,841.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.20 : 5,129.70 = 1,227.70 : x
  2. Step 2: Convert to fraction form
    3,419.20/5,129.70 = 1,227.70/x
  3. Step 3: Cross multiply
    3,419.20x = 5,129.70 × 1,227.70
  4. Step 4: Simplify right side
    3,419.20x = 6,297,732.69
  5. Step 5: Solve for x
    x = 6,297,732.69/3,419.20
  6. Step 6: Final answer
    x = 1,841.87

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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.