Home / 7,986.16-11,979.28-2,792.04

Finding the Fourth Proportional to 7,986.16, 11,979.28 and 2,792.04

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Solution

The fourth proportional to 7,986.16, 11,979.28 and 2,792.04 is: 4,188.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.16 : 11,979.28 = 2,792.04 : x
  2. Step 2: Convert to fraction form
    7,986.16/11,979.28 = 2,792.04/x
  3. Step 3: Cross multiply
    7,986.16x = 11,979.28 × 2,792.04
  4. Step 4: Simplify right side
    7,986.16x = 33,446,628.93
  5. Step 5: Solve for x
    x = 33,446,628.93/7,986.16
  6. Step 6: Final answer
    x = 4,188.07

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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.