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Finding the Fourth Proportional to 3,556.88, 5,335.44 and 1,996.64

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Solution

The fourth proportional to 3,556.88, 5,335.44 and 1,996.64 is: 2,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.88 : 5,335.44 = 1,996.64 : x
  2. Step 2: Convert to fraction form
    3,556.88/5,335.44 = 1,996.64/x
  3. Step 3: Cross multiply
    3,556.88x = 5,335.44 × 1,996.64
  4. Step 4: Simplify right side
    3,556.88x = 10,652,952.92
  5. Step 5: Solve for x
    x = 10,652,952.92/3,556.88
  6. Step 6: Final answer
    x = 2,995.03

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1.5x scale

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.