Home / 3,421.45-5,129.14-1,229.59

Finding the Fourth Proportional to 3,421.45, 5,129.14 and 1,229.59

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Solution

The fourth proportional to 3,421.45, 5,129.14 and 1,229.59 is: 1,843.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.45 : 5,129.14 = 1,229.59 : x
  2. Step 2: Convert to fraction form
    3,421.45/5,129.14 = 1,229.59/x
  3. Step 3: Cross multiply
    3,421.45x = 5,129.14 × 1,229.59
  4. Step 4: Simplify right side
    3,421.45x = 6,306,733.10
  5. Step 5: Solve for x
    x = 6,306,733.10/3,421.45
  6. Step 6: Final answer
    x = 1,843.29

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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.