Home / 3,936.46-5,432.28-2,168.20

Finding the Fourth Proportional to 3,936.46, 5,432.28 and 2,168.20

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Solution

The fourth proportional to 3,936.46, 5,432.28 and 2,168.20 is: 2,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.46 : 5,432.28 = 2,168.20 : x
  2. Step 2: Convert to fraction form
    3,936.46/5,432.28 = 2,168.20/x
  3. Step 3: Cross multiply
    3,936.46x = 5,432.28 × 2,168.20
  4. Step 4: Simplify right side
    3,936.46x = 11,778,269.50
  5. Step 5: Solve for x
    x = 11,778,269.50/3,936.46
  6. Step 6: Final answer
    x = 2,992.10

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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.