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Finding the Fourth Proportional to 3,536.64, 5,308.80 and 1,996.80

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Solution

The fourth proportional to 3,536.64, 5,308.80 and 1,996.80 is: 2,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,536.64 : 5,308.80 = 1,996.80 : x
  2. Step 2: Convert to fraction form
    3,536.64/5,308.80 = 1,996.80/x
  3. Step 3: Cross multiply
    3,536.64x = 5,308.80 × 1,996.80
  4. Step 4: Simplify right side
    3,536.64x = 10,600,611.84
  5. Step 5: Solve for x
    x = 10,600,611.84/3,536.64
  6. Step 6: Final answer
    x = 2,997.37

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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.