Home / 6,912.26-10,368.33-1,981.90

Finding the Fourth Proportional to 6,912.26, 10,368.33 and 1,981.90

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Solution

The fourth proportional to 6,912.26, 10,368.33 and 1,981.90 is: 2,972.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.26 : 10,368.33 = 1,981.90 : x
  2. Step 2: Convert to fraction form
    6,912.26/10,368.33 = 1,981.90/x
  3. Step 3: Cross multiply
    6,912.26x = 10,368.33 × 1,981.90
  4. Step 4: Simplify right side
    6,912.26x = 20,548,993.23
  5. Step 5: Solve for x
    x = 20,548,993.23/6,912.26
  6. Step 6: Final answer
    x = 2,972.83

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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.