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Finding the Fourth Proportional to 5,791.12, 8,687.96 and 1,788.54

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Solution

The fourth proportional to 5,791.12, 8,687.96 and 1,788.54 is: 2,683.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.12 : 8,687.96 = 1,788.54 : x
  2. Step 2: Convert to fraction form
    5,791.12/8,687.96 = 1,788.54/x
  3. Step 3: Cross multiply
    5,791.12x = 8,687.96 × 1,788.54
  4. Step 4: Simplify right side
    5,791.12x = 15,538,763.98
  5. Step 5: Solve for x
    x = 15,538,763.98/5,791.12
  6. Step 6: Final answer
    x = 2,683.21

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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.