Home / 5,419.20-8,121.11-3,754.35

Finding the Fourth Proportional to 5,419.20, 8,121.11 and 3,754.35

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Solution

The fourth proportional to 5,419.20, 8,121.11 and 3,754.35 is: 5,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.20 : 8,121.11 = 3,754.35 : x
  2. Step 2: Convert to fraction form
    5,419.20/8,121.11 = 3,754.35/x
  3. Step 3: Cross multiply
    5,419.20x = 8,121.11 × 3,754.35
  4. Step 4: Simplify right side
    5,419.20x = 30,489,489.33
  5. Step 5: Solve for x
    x = 30,489,489.33/5,419.20
  6. Step 6: Final answer
    x = 5,626.20

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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.