Home / 2,766.12-4,148.06-1,378.95

Finding the Fourth Proportional to 2,766.12, 4,148.06 and 1,378.95

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Solution

The fourth proportional to 2,766.12, 4,148.06 and 1,378.95 is: 2,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.12 : 4,148.06 = 1,378.95 : x
  2. Step 2: Convert to fraction form
    2,766.12/4,148.06 = 1,378.95/x
  3. Step 3: Cross multiply
    2,766.12x = 4,148.06 × 1,378.95
  4. Step 4: Simplify right side
    2,766.12x = 5,719,960.44
  5. Step 5: Solve for x
    x = 5,719,960.44/2,766.12
  6. Step 6: Final answer
    x = 2,067.86

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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.