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Finding the Fourth Proportional to 8,991.71, 13,489.60 and 2,752.59

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Solution

The fourth proportional to 8,991.71, 13,489.60 and 2,752.59 is: 4,129.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.71 : 13,489.60 = 2,752.59 : x
  2. Step 2: Convert to fraction form
    8,991.71/13,489.60 = 2,752.59/x
  3. Step 3: Cross multiply
    8,991.71x = 13,489.60 × 2,752.59
  4. Step 4: Simplify right side
    8,991.71x = 37,131,338.06
  5. Step 5: Solve for x
    x = 37,131,338.06/8,991.71
  6. Step 6: Final answer
    x = 4,129.51

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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.