Home / 7,984.28-11,976.48-2,790.16

Finding the Fourth Proportional to 7,984.28, 11,976.48 and 2,790.16

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Solution

The fourth proportional to 7,984.28, 11,976.48 and 2,790.16 is: 4,185.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.28 : 11,976.48 = 2,790.16 : x
  2. Step 2: Convert to fraction form
    7,984.28/11,976.48 = 2,790.16/x
  3. Step 3: Cross multiply
    7,984.28x = 11,976.48 × 2,790.16
  4. Step 4: Simplify right side
    7,984.28x = 33,416,295.44
  5. Step 5: Solve for x
    x = 33,416,295.44/7,984.28
  6. Step 6: Final answer
    x = 4,185.26

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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.