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Finding the Fourth Proportional to 6,441.75, 9,663.84 and 2,979

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Solution

The fourth proportional to 6,441.75, 9,663.84 and 2,979 is: 4,469.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,441.75 : 9,663.84 = 2,979 : x
  2. Step 2: Convert to fraction form
    6,441.75/9,663.84 = 2,979/x
  3. Step 3: Cross multiply
    6,441.75x = 9,663.84 × 2,979
  4. Step 4: Simplify right side
    6,441.75x = 28,788,579.36
  5. Step 5: Solve for x
    x = 28,788,579.36/6,441.75
  6. Step 6: Final answer
    x = 4,469.06

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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.