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Finding the Fourth Proportional to 8,991.88, 13,489.80 and 2,751.94

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Solution

The fourth proportional to 8,991.88, 13,489.80 and 2,751.94 is: 4,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.88 : 13,489.80 = 2,751.94 : x
  2. Step 2: Convert to fraction form
    8,991.88/13,489.80 = 2,751.94/x
  3. Step 3: Cross multiply
    8,991.88x = 13,489.80 × 2,751.94
  4. Step 4: Simplify right side
    8,991.88x = 37,123,120.21
  5. Step 5: Solve for x
    x = 37,123,120.21/8,991.88
  6. Step 6: Final answer
    x = 4,128.52

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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.