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Finding the Fourth Proportional to 8,508.54, 12,760.51 and 5,383.86

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Solution

The fourth proportional to 8,508.54, 12,760.51 and 5,383.86 is: 8,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.54 : 12,760.51 = 5,383.86 : x
  2. Step 2: Convert to fraction form
    8,508.54/12,760.51 = 5,383.86/x
  3. Step 3: Cross multiply
    8,508.54x = 12,760.51 × 5,383.86
  4. Step 4: Simplify right side
    8,508.54x = 68,700,799.37
  5. Step 5: Solve for x
    x = 68,700,799.37/8,508.54
  6. Step 6: Final answer
    x = 8,074.33

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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.