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Finding the Fourth Proportional to 3,389.88, 5,080.50 and 1,635.96

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Solution

The fourth proportional to 3,389.88, 5,080.50 and 1,635.96 is: 2,451.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.88 : 5,080.50 = 1,635.96 : x
  2. Step 2: Convert to fraction form
    3,389.88/5,080.50 = 1,635.96/x
  3. Step 3: Cross multiply
    3,389.88x = 5,080.50 × 1,635.96
  4. Step 4: Simplify right side
    3,389.88x = 8,311,494.78
  5. Step 5: Solve for x
    x = 8,311,494.78/3,389.88
  6. Step 6: Final answer
    x = 2,451.86

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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.