Home / 2,811.35-4,213.35-1,251.83

Finding the Fourth Proportional to 2,811.35, 4,213.35 and 1,251.83

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Solution

The fourth proportional to 2,811.35, 4,213.35 and 1,251.83 is: 1,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.35 : 4,213.35 = 1,251.83 : x
  2. Step 2: Convert to fraction form
    2,811.35/4,213.35 = 1,251.83/x
  3. Step 3: Cross multiply
    2,811.35x = 4,213.35 × 1,251.83
  4. Step 4: Simplify right side
    2,811.35x = 5,274,408.46
  5. Step 5: Solve for x
    x = 5,274,408.46/2,811.35
  6. Step 6: Final answer
    x = 1,876.11

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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.