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Finding the Fourth Proportional to 8,760.78, 13,133.80 and 3,826.66

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Solution

The fourth proportional to 8,760.78, 13,133.80 and 3,826.66 is: 5,736.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.78 : 13,133.80 = 3,826.66 : x
  2. Step 2: Convert to fraction form
    8,760.78/13,133.80 = 3,826.66/x
  3. Step 3: Cross multiply
    8,760.78x = 13,133.80 × 3,826.66
  4. Step 4: Simplify right side
    8,760.78x = 50,258,587.11
  5. Step 5: Solve for x
    x = 50,258,587.11/8,760.78
  6. Step 6: Final answer
    x = 5,736.77

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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.