Home / 3,936.39-5,432.31-2,168.04

Finding the Fourth Proportional to 3,936.39, 5,432.31 and 2,168.04

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Solution

The fourth proportional to 3,936.39, 5,432.31 and 2,168.04 is: 2,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.39 : 5,432.31 = 2,168.04 : x
  2. Step 2: Convert to fraction form
    3,936.39/5,432.31 = 2,168.04/x
  3. Step 3: Cross multiply
    3,936.39x = 5,432.31 × 2,168.04
  4. Step 4: Simplify right side
    3,936.39x = 11,777,465.37
  5. Step 5: Solve for x
    x = 11,777,465.37/3,936.39
  6. Step 6: Final answer
    x = 2,991.95

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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.