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Finding the Fourth Proportional to 8,866.72, 13,305.20 and 3,600.64

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Solution

The fourth proportional to 8,866.72, 13,305.20 and 3,600.64 is: 5,403.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.72 : 13,305.20 = 3,600.64 : x
  2. Step 2: Convert to fraction form
    8,866.72/13,305.20 = 3,600.64/x
  3. Step 3: Cross multiply
    8,866.72x = 13,305.20 × 3,600.64
  4. Step 4: Simplify right side
    8,866.72x = 47,907,235.33
  5. Step 5: Solve for x
    x = 47,907,235.33/8,866.72
  6. Step 6: Final answer
    x = 5,403.04

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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.