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Finding the Fourth Proportional to 2,654.56, 3,983.64 and 1,679.68

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Solution

The fourth proportional to 2,654.56, 3,983.64 and 1,679.68 is: 2,520.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,654.56 : 3,983.64 = 1,679.68 : x
  2. Step 2: Convert to fraction form
    2,654.56/3,983.64 = 1,679.68/x
  3. Step 3: Cross multiply
    2,654.56x = 3,983.64 × 1,679.68
  4. Step 4: Simplify right side
    2,654.56x = 6,691,240.44
  5. Step 5: Solve for x
    x = 6,691,240.44/2,654.56
  6. Step 6: Final answer
    x = 2,520.66

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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.