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Finding the Fourth Proportional to 6,979.92, 10,476.81 and 5,679.01

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Solution

The fourth proportional to 6,979.92, 10,476.81 and 5,679.01 is: 8,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.92 : 10,476.81 = 5,679.01 : x
  2. Step 2: Convert to fraction form
    6,979.92/10,476.81 = 5,679.01/x
  3. Step 3: Cross multiply
    6,979.92x = 10,476.81 × 5,679.01
  4. Step 4: Simplify right side
    6,979.92x = 59,497,921.85
  5. Step 5: Solve for x
    x = 59,497,921.85/6,979.92
  6. Step 6: Final answer
    x = 8,524.15

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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.