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Finding the Fourth Proportional to 5,358.86, 8,023.80 and 3,879.62

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Solution

The fourth proportional to 5,358.86, 8,023.80 and 3,879.62 is: 5,808.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.86 : 8,023.80 = 3,879.62 : x
  2. Step 2: Convert to fraction form
    5,358.86/8,023.80 = 3,879.62/x
  3. Step 3: Cross multiply
    5,358.86x = 8,023.80 × 3,879.62
  4. Step 4: Simplify right side
    5,358.86x = 31,129,294.96
  5. Step 5: Solve for x
    x = 31,129,294.96/5,358.86
  6. Step 6: Final answer
    x = 5,808.94

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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.