Home / 3,922.96-5,874.06-3,139.30

Finding the Fourth Proportional to 3,922.96, 5,874.06 and 3,139.30

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Solution

The fourth proportional to 3,922.96, 5,874.06 and 3,139.30 is: 4,700.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.96 : 5,874.06 = 3,139.30 : x
  2. Step 2: Convert to fraction form
    3,922.96/5,874.06 = 3,139.30/x
  3. Step 3: Cross multiply
    3,922.96x = 5,874.06 × 3,139.30
  4. Step 4: Simplify right side
    3,922.96x = 18,440,436.56
  5. Step 5: Solve for x
    x = 18,440,436.56/3,922.96
  6. Step 6: Final answer
    x = 4,700.64

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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.