Home / 7,979.21-11,968.93-3,049.11

Finding the Fourth Proportional to 7,979.21, 11,968.93 and 3,049.11

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Solution

The fourth proportional to 7,979.21, 11,968.93 and 3,049.11 is: 4,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.21 : 11,968.93 = 3,049.11 : x
  2. Step 2: Convert to fraction form
    7,979.21/11,968.93 = 3,049.11/x
  3. Step 3: Cross multiply
    7,979.21x = 11,968.93 × 3,049.11
  4. Step 4: Simplify right side
    7,979.21x = 36,494,587.96
  5. Step 5: Solve for x
    x = 36,494,587.96/7,979.21
  6. Step 6: Final answer
    x = 4,573.71

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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.