Home / 3,081.52-4,251.21-2,019.55

Finding the Fourth Proportional to 3,081.52, 4,251.21 and 2,019.55

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Solution

The fourth proportional to 3,081.52, 4,251.21 and 2,019.55 is: 2,786.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.52 : 4,251.21 = 2,019.55 : x
  2. Step 2: Convert to fraction form
    3,081.52/4,251.21 = 2,019.55/x
  3. Step 3: Cross multiply
    3,081.52x = 4,251.21 × 2,019.55
  4. Step 4: Simplify right side
    3,081.52x = 8,585,509.90
  5. Step 5: Solve for x
    x = 8,585,509.90/3,081.52
  6. Step 6: Final answer
    x = 2,786.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.