Home / 2,519.20-3,775.76-1,286.24

Finding the Fourth Proportional to 2,519.20, 3,775.76 and 1,286.24

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Solution

The fourth proportional to 2,519.20, 3,775.76 and 1,286.24 is: 1,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.20 : 3,775.76 = 1,286.24 : x
  2. Step 2: Convert to fraction form
    2,519.20/3,775.76 = 1,286.24/x
  3. Step 3: Cross multiply
    2,519.20x = 3,775.76 × 1,286.24
  4. Step 4: Simplify right side
    2,519.20x = 4,856,533.54
  5. Step 5: Solve for x
    x = 4,856,533.54/2,519.20
  6. Step 6: Final answer
    x = 1,927.81

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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.