Home / 7,986.02-11,979.10-2,791.92

Finding the Fourth Proportional to 7,986.02, 11,979.10 and 2,791.92

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Solution

The fourth proportional to 7,986.02, 11,979.10 and 2,791.92 is: 4,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.02 : 11,979.10 = 2,791.92 : x
  2. Step 2: Convert to fraction form
    7,986.02/11,979.10 = 2,791.92/x
  3. Step 3: Cross multiply
    7,986.02x = 11,979.10 × 2,791.92
  4. Step 4: Simplify right side
    7,986.02x = 33,444,688.87
  5. Step 5: Solve for x
    x = 33,444,688.87/7,986.02
  6. Step 6: Final answer
    x = 4,187.90

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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.