Home / 3,965.21-5,947.82-1,191.92

Finding the Fourth Proportional to 3,965.21, 5,947.82 and 1,191.92

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Solution

The fourth proportional to 3,965.21, 5,947.82 and 1,191.92 is: 1,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.21 : 5,947.82 = 1,191.92 : x
  2. Step 2: Convert to fraction form
    3,965.21/5,947.82 = 1,191.92/x
  3. Step 3: Cross multiply
    3,965.21x = 5,947.82 × 1,191.92
  4. Step 4: Simplify right side
    3,965.21x = 7,089,289.92
  5. Step 5: Solve for x
    x = 7,089,289.92/3,965.21
  6. Step 6: Final answer
    x = 1,787.87

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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.