Home / 7,979.72-11,968.36-2,784.38

Finding the Fourth Proportional to 7,979.72, 11,968.36 and 2,784.38

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Solution

The fourth proportional to 7,979.72, 11,968.36 and 2,784.38 is: 4,176.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.72 : 11,968.36 = 2,784.38 : x
  2. Step 2: Convert to fraction form
    7,979.72/11,968.36 = 2,784.38/x
  3. Step 3: Cross multiply
    7,979.72x = 11,968.36 × 2,784.38
  4. Step 4: Simplify right side
    7,979.72x = 33,324,395.41
  5. Step 5: Solve for x
    x = 33,324,395.41/7,979.72
  6. Step 6: Final answer
    x = 4,176.14

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.