Home / 2,191.19-3,286.64-892.62

Finding the Fourth Proportional to 2,191.19, 3,286.64 and 892.62

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Solution

The fourth proportional to 2,191.19, 3,286.64 and 892.62 is: 1,338.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.19 : 3,286.64 = 892.62 : x
  2. Step 2: Convert to fraction form
    2,191.19/3,286.64 = 892.62/x
  3. Step 3: Cross multiply
    2,191.19x = 3,286.64 × 892.62
  4. Step 4: Simplify right side
    2,191.19x = 2,933,722.83
  5. Step 5: Solve for x
    x = 2,933,722.83/2,191.19
  6. Step 6: Final answer
    x = 1,338.88

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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.