Home / 2,811.15-4,217.16-1,251.69

Finding the Fourth Proportional to 2,811.15, 4,217.16 and 1,251.69

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Solution

The fourth proportional to 2,811.15, 4,217.16 and 1,251.69 is: 1,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.15 : 4,217.16 = 1,251.69 : x
  2. Step 2: Convert to fraction form
    2,811.15/4,217.16 = 1,251.69/x
  3. Step 3: Cross multiply
    2,811.15x = 4,217.16 × 1,251.69
  4. Step 4: Simplify right side
    2,811.15x = 5,278,577.00
  5. Step 5: Solve for x
    x = 5,278,577.00/2,811.15
  6. Step 6: Final answer
    x = 1,877.73

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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.