Home / 2,112.11-3,168.16-941.81

Finding the Fourth Proportional to 2,112.11, 3,168.16 and 941.81

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Solution

The fourth proportional to 2,112.11, 3,168.16 and 941.81 is: 1,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.11 : 3,168.16 = 941.81 : x
  2. Step 2: Convert to fraction form
    2,112.11/3,168.16 = 941.81/x
  3. Step 3: Cross multiply
    2,112.11x = 3,168.16 × 941.81
  4. Step 4: Simplify right side
    2,112.11x = 2,983,786.57
  5. Step 5: Solve for x
    x = 2,983,786.57/2,112.11
  6. Step 6: Final answer
    x = 1,412.71

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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.