Home / 7,827.36-11,734.35-3,876.78

Finding the Fourth Proportional to 7,827.36, 11,734.35 and 3,876.78

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Solution

The fourth proportional to 7,827.36, 11,734.35 and 3,876.78 is: 5,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,827.36 : 11,734.35 = 3,876.78 : x
  2. Step 2: Convert to fraction form
    7,827.36/11,734.35 = 3,876.78/x
  3. Step 3: Cross multiply
    7,827.36x = 11,734.35 × 3,876.78
  4. Step 4: Simplify right side
    7,827.36x = 45,491,493.39
  5. Step 5: Solve for x
    x = 45,491,493.39/7,827.36
  6. Step 6: Final answer
    x = 5,811.86

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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.