Home / 3,847.39-5,771.49-2,091.31

Finding the Fourth Proportional to 3,847.39, 5,771.49 and 2,091.31

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Solution

The fourth proportional to 3,847.39, 5,771.49 and 2,091.31 is: 3,137.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.39 : 5,771.49 = 2,091.31 : x
  2. Step 2: Convert to fraction form
    3,847.39/5,771.49 = 2,091.31/x
  3. Step 3: Cross multiply
    3,847.39x = 5,771.49 × 2,091.31
  4. Step 4: Simplify right side
    3,847.39x = 12,069,974.75
  5. Step 5: Solve for x
    x = 12,069,974.75/3,847.39
  6. Step 6: Final answer
    x = 3,137.19

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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.