Home / 3,936.88-5,432.90-2,144.35

Finding the Fourth Proportional to 3,936.88, 5,432.90 and 2,144.35

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Solution

The fourth proportional to 3,936.88, 5,432.90 and 2,144.35 is: 2,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.88 : 5,432.90 = 2,144.35 : x
  2. Step 2: Convert to fraction form
    3,936.88/5,432.90 = 2,144.35/x
  3. Step 3: Cross multiply
    3,936.88x = 5,432.90 × 2,144.35
  4. Step 4: Simplify right side
    3,936.88x = 11,650,039.12
  5. Step 5: Solve for x
    x = 11,650,039.12/3,936.88
  6. Step 6: Final answer
    x = 2,959.21

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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.