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Finding the Fourth Proportional to 7,845, 11,769.93 and 3,228

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Solution

The fourth proportional to 7,845, 11,769.93 and 3,228 is: 4,843.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845 : 11,769.93 = 3,228 : x
  2. Step 2: Convert to fraction form
    7,845/11,769.93 = 3,228/x
  3. Step 3: Cross multiply
    7,845x = 11,769.93 × 3,228
  4. Step 4: Simplify right side
    7,845x = 37,993,334.04
  5. Step 5: Solve for x
    x = 37,993,334.04/7,845
  6. Step 6: Final answer
    x = 4,843.00

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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.