Home / 3,971.90-5,956.33-1,338.70

Finding the Fourth Proportional to 3,971.90, 5,956.33 and 1,338.70

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Solution

The fourth proportional to 3,971.90, 5,956.33 and 1,338.70 is: 2,007.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.90 : 5,956.33 = 1,338.70 : x
  2. Step 2: Convert to fraction form
    3,971.90/5,956.33 = 1,338.70/x
  3. Step 3: Cross multiply
    3,971.90x = 5,956.33 × 1,338.70
  4. Step 4: Simplify right side
    3,971.90x = 7,973,738.97
  5. Step 5: Solve for x
    x = 7,973,738.97/3,971.90
  6. Step 6: Final answer
    x = 2,007.54

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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.