Home / 3,940.80-5,912.35-1,167.55

Finding the Fourth Proportional to 3,940.80, 5,912.35 and 1,167.55

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Solution

The fourth proportional to 3,940.80, 5,912.35 and 1,167.55 is: 1,751.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.80 : 5,912.35 = 1,167.55 : x
  2. Step 2: Convert to fraction form
    3,940.80/5,912.35 = 1,167.55/x
  3. Step 3: Cross multiply
    3,940.80x = 5,912.35 × 1,167.55
  4. Step 4: Simplify right side
    3,940.80x = 6,902,964.24
  5. Step 5: Solve for x
    x = 6,902,964.24/3,940.80
  6. Step 6: Final answer
    x = 1,751.67

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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.