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Finding the Fourth Proportional to 3,867.78, 5,791.94 and 2,771.58

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Solution

The fourth proportional to 3,867.78, 5,791.94 and 2,771.58 is: 4,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.78 : 5,791.94 = 2,771.58 : x
  2. Step 2: Convert to fraction form
    3,867.78/5,791.94 = 2,771.58/x
  3. Step 3: Cross multiply
    3,867.78x = 5,791.94 × 2,771.58
  4. Step 4: Simplify right side
    3,867.78x = 16,052,825.07
  5. Step 5: Solve for x
    x = 16,052,825.07/3,867.78
  6. Step 6: Final answer
    x = 4,150.40

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1.5x scale

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.