Home / 3,968.92-5,945.64-2,119.40

Finding the Fourth Proportional to 3,968.92, 5,945.64 and 2,119.40

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Solution

The fourth proportional to 3,968.92, 5,945.64 and 2,119.40 is: 3,174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.92 : 5,945.64 = 2,119.40 : x
  2. Step 2: Convert to fraction form
    3,968.92/5,945.64 = 2,119.40/x
  3. Step 3: Cross multiply
    3,968.92x = 5,945.64 × 2,119.40
  4. Step 4: Simplify right side
    3,968.92x = 12,601,189.42
  5. Step 5: Solve for x
    x = 12,601,189.42/3,968.92
  6. Step 6: Final answer
    x = 3,174.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.