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Finding the Fourth Proportional to 3,843, 5,765.22 and 1,791

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Solution

The fourth proportional to 3,843, 5,765.22 and 1,791 is: 2,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843 : 5,765.22 = 1,791 : x
  2. Step 2: Convert to fraction form
    3,843/5,765.22 = 1,791/x
  3. Step 3: Cross multiply
    3,843x = 5,765.22 × 1,791
  4. Step 4: Simplify right side
    3,843x = 10,325,509.02
  5. Step 5: Solve for x
    x = 10,325,509.02/3,843
  6. Step 6: Final answer
    x = 2,686.84

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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.