Home / 3,936.35-5,431.95-2,167.61

Finding the Fourth Proportional to 3,936.35, 5,431.95 and 2,167.61

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Solution

The fourth proportional to 3,936.35, 5,431.95 and 2,167.61 is: 2,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.35 : 5,431.95 = 2,167.61 : x
  2. Step 2: Convert to fraction form
    3,936.35/5,431.95 = 2,167.61/x
  3. Step 3: Cross multiply
    3,936.35x = 5,431.95 × 2,167.61
  4. Step 4: Simplify right side
    3,936.35x = 11,774,349.14
  5. Step 5: Solve for x
    x = 11,774,349.14/3,936.35
  6. Step 6: Final answer
    x = 2,991.18

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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.