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Finding the Fourth Proportional to 2,672.57, 3,999.83 and 1,908.03

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Solution

The fourth proportional to 2,672.57, 3,999.83 and 1,908.03 is: 2,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.57 : 3,999.83 = 1,908.03 : x
  2. Step 2: Convert to fraction form
    2,672.57/3,999.83 = 1,908.03/x
  3. Step 3: Cross multiply
    2,672.57x = 3,999.83 × 1,908.03
  4. Step 4: Simplify right side
    2,672.57x = 7,631,786.09
  5. Step 5: Solve for x
    x = 7,631,786.09/2,672.57
  6. Step 6: Final answer
    x = 2,855.60

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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.