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Finding the Fourth Proportional to 8,811.82, 13,208.67 and 3,880.54

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Solution

The fourth proportional to 8,811.82, 13,208.67 and 3,880.54 is: 5,816.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.82 : 13,208.67 = 3,880.54 : x
  2. Step 2: Convert to fraction form
    8,811.82/13,208.67 = 3,880.54/x
  3. Step 3: Cross multiply
    8,811.82x = 13,208.67 × 3,880.54
  4. Step 4: Simplify right side
    8,811.82x = 51,256,772.28
  5. Step 5: Solve for x
    x = 51,256,772.28/8,811.82
  6. Step 6: Final answer
    x = 5,816.82

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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.