Home / 3,936.22-5,432.02-2,167.80

Finding the Fourth Proportional to 3,936.22, 5,432.02 and 2,167.80

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Solution

The fourth proportional to 3,936.22, 5,432.02 and 2,167.80 is: 2,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.22 : 5,432.02 = 2,167.80 : x
  2. Step 2: Convert to fraction form
    3,936.22/5,432.02 = 2,167.80/x
  3. Step 3: Cross multiply
    3,936.22x = 5,432.02 × 2,167.80
  4. Step 4: Simplify right side
    3,936.22x = 11,775,532.96
  5. Step 5: Solve for x
    x = 11,775,532.96/3,936.22
  6. Step 6: Final answer
    x = 2,991.58

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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.