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Finding the Fourth Proportional to 8,399.86, 11,591.45 and 4,622.67

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Solution

The fourth proportional to 8,399.86, 11,591.45 and 4,622.67 is: 6,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.86 : 11,591.45 = 4,622.67 : x
  2. Step 2: Convert to fraction form
    8,399.86/11,591.45 = 4,622.67/x
  3. Step 3: Cross multiply
    8,399.86x = 11,591.45 × 4,622.67
  4. Step 4: Simplify right side
    8,399.86x = 53,583,459.73
  5. Step 5: Solve for x
    x = 53,583,459.73/8,399.86
  6. Step 6: Final answer
    x = 6,379.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.