Home / 7,984.50-11,976.95-2,790.38

Finding the Fourth Proportional to 7,984.50, 11,976.95 and 2,790.38

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Solution

The fourth proportional to 7,984.50, 11,976.95 and 2,790.38 is: 4,185.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.50 : 11,976.95 = 2,790.38 : x
  2. Step 2: Convert to fraction form
    7,984.50/11,976.95 = 2,790.38/x
  3. Step 3: Cross multiply
    7,984.50x = 11,976.95 × 2,790.38
  4. Step 4: Simplify right side
    7,984.50x = 33,420,188.83
  5. Step 5: Solve for x
    x = 33,420,188.83/7,984.50
  6. Step 6: Final answer
    x = 4,185.63

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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.