Home / 2,191.20-3,286.80-941.61

Finding the Fourth Proportional to 2,191.20, 3,286.80 and 941.61

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Solution

The fourth proportional to 2,191.20, 3,286.80 and 941.61 is: 1,412.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.20 : 3,286.80 = 941.61 : x
  2. Step 2: Convert to fraction form
    2,191.20/3,286.80 = 941.61/x
  3. Step 3: Cross multiply
    2,191.20x = 3,286.80 × 941.61
  4. Step 4: Simplify right side
    2,191.20x = 3,094,883.75
  5. Step 5: Solve for x
    x = 3,094,883.75/2,191.20
  6. Step 6: Final answer
    x = 1,412.42

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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.