Home / 2,580.39-3,867.41-1,191.85

Finding the Fourth Proportional to 2,580.39, 3,867.41 and 1,191.85

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Solution

The fourth proportional to 2,580.39, 3,867.41 and 1,191.85 is: 1,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.39 : 3,867.41 = 1,191.85 : x
  2. Step 2: Convert to fraction form
    2,580.39/3,867.41 = 1,191.85/x
  3. Step 3: Cross multiply
    2,580.39x = 3,867.41 × 1,191.85
  4. Step 4: Simplify right side
    2,580.39x = 4,609,365.92
  5. Step 5: Solve for x
    x = 4,609,365.92/2,580.39
  6. Step 6: Final answer
    x = 1,786.31

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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.