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Finding the Fourth Proportional to 6,891.66, 10,331.66 and 2,993.12

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Solution

The fourth proportional to 6,891.66, 10,331.66 and 2,993.12 is: 4,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.66 : 10,331.66 = 2,993.12 : x
  2. Step 2: Convert to fraction form
    6,891.66/10,331.66 = 2,993.12/x
  3. Step 3: Cross multiply
    6,891.66x = 10,331.66 × 2,993.12
  4. Step 4: Simplify right side
    6,891.66x = 30,923,898.18
  5. Step 5: Solve for x
    x = 30,923,898.18/6,891.66
  6. Step 6: Final answer
    x = 4,487.15

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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.