Home / 2,517.79-3,776.30-1,286.11

Finding the Fourth Proportional to 2,517.79, 3,776.30 and 1,286.11

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Solution

The fourth proportional to 2,517.79, 3,776.30 and 1,286.11 is: 1,928.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.79 : 3,776.30 = 1,286.11 : x
  2. Step 2: Convert to fraction form
    2,517.79/3,776.30 = 1,286.11/x
  3. Step 3: Cross multiply
    2,517.79x = 3,776.30 × 1,286.11
  4. Step 4: Simplify right side
    2,517.79x = 4,856,730.76
  5. Step 5: Solve for x
    x = 4,856,730.76/2,517.79
  6. Step 6: Final answer
    x = 1,928.97

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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.