Home / 3,938.70-5,911.67-1,992.27

Finding the Fourth Proportional to 3,938.70, 5,911.67 and 1,992.27

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Solution

The fourth proportional to 3,938.70, 5,911.67 and 1,992.27 is: 2,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.70 : 5,911.67 = 1,992.27 : x
  2. Step 2: Convert to fraction form
    3,938.70/5,911.67 = 1,992.27/x
  3. Step 3: Cross multiply
    3,938.70x = 5,911.67 × 1,992.27
  4. Step 4: Simplify right side
    3,938.70x = 11,777,632.83
  5. Step 5: Solve for x
    x = 11,777,632.83/3,938.70
  6. Step 6: Final answer
    x = 2,990.23

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1.5x scale

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.