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Finding the Fourth Proportional to 7,979.00, 11,950.25 and 3,821.90

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Solution

The fourth proportional to 7,979.00, 11,950.25 and 3,821.90 is: 5,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.00 : 11,950.25 = 3,821.90 : x
  2. Step 2: Convert to fraction form
    7,979.00/11,950.25 = 3,821.90/x
  3. Step 3: Cross multiply
    7,979.00x = 11,950.25 × 3,821.90
  4. Step 4: Simplify right side
    7,979.00x = 45,672,581.61
  5. Step 5: Solve for x
    x = 45,672,581.61/7,979.00
  6. Step 6: Final answer
    x = 5,724.10

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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.