Home / 3,627.20-5,439.80-1,286.88

Finding the Fourth Proportional to 3,627.20, 5,439.80 and 1,286.88

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Solution

The fourth proportional to 3,627.20, 5,439.80 and 1,286.88 is: 1,929.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,627.20 : 5,439.80 = 1,286.88 : x
  2. Step 2: Convert to fraction form
    3,627.20/5,439.80 = 1,286.88/x
  3. Step 3: Cross multiply
    3,627.20x = 5,439.80 × 1,286.88
  4. Step 4: Simplify right side
    3,627.20x = 7,000,363.39
  5. Step 5: Solve for x
    x = 7,000,363.39/3,627.20
  6. Step 6: Final answer
    x = 1,929.97

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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.