Home / 3,936.39-5,432.26-2,168.01

Finding the Fourth Proportional to 3,936.39, 5,432.26 and 2,168.01

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Solution

The fourth proportional to 3,936.39, 5,432.26 and 2,168.01 is: 2,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.39 : 5,432.26 = 2,168.01 : x
  2. Step 2: Convert to fraction form
    3,936.39/5,432.26 = 2,168.01/x
  3. Step 3: Cross multiply
    3,936.39x = 5,432.26 × 2,168.01
  4. Step 4: Simplify right side
    3,936.39x = 11,777,194.00
  5. Step 5: Solve for x
    x = 11,777,194.00/3,936.39
  6. Step 6: Final answer
    x = 2,991.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.