Home / 3,921.96-5,412.68-2,243.61

Finding the Fourth Proportional to 3,921.96, 5,412.68 and 2,243.61

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Solution

The fourth proportional to 3,921.96, 5,412.68 and 2,243.61 is: 3,096.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.96 : 5,412.68 = 2,243.61 : x
  2. Step 2: Convert to fraction form
    3,921.96/5,412.68 = 2,243.61/x
  3. Step 3: Cross multiply
    3,921.96x = 5,412.68 × 2,243.61
  4. Step 4: Simplify right side
    3,921.96x = 12,143,942.97
  5. Step 5: Solve for x
    x = 12,143,942.97/3,921.96
  6. Step 6: Final answer
    x = 3,096.40

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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.