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Finding the Fourth Proportional to 8,819.94, 13,229.93 and 3,889.60

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Solution

The fourth proportional to 8,819.94, 13,229.93 and 3,889.60 is: 5,834.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.94 : 13,229.93 = 3,889.60 : x
  2. Step 2: Convert to fraction form
    8,819.94/13,229.93 = 3,889.60/x
  3. Step 3: Cross multiply
    8,819.94x = 13,229.93 × 3,889.60
  4. Step 4: Simplify right side
    8,819.94x = 51,459,135.73
  5. Step 5: Solve for x
    x = 51,459,135.73/8,819.94
  6. Step 6: Final answer
    x = 5,834.41

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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.