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Finding the Fourth Proportional to 3,991.93, 5,980.53 and 2,672.75

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Solution

The fourth proportional to 3,991.93, 5,980.53 and 2,672.75 is: 4,004.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.93 : 5,980.53 = 2,672.75 : x
  2. Step 2: Convert to fraction form
    3,991.93/5,980.53 = 2,672.75/x
  3. Step 3: Cross multiply
    3,991.93x = 5,980.53 × 2,672.75
  4. Step 4: Simplify right side
    3,991.93x = 15,984,452.89
  5. Step 5: Solve for x
    x = 15,984,452.89/3,991.93
  6. Step 6: Final answer
    x = 4,004.19

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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.