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Finding the Fourth Proportional to 3,198.68, 4,797.66 and 890.36

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Solution

The fourth proportional to 3,198.68, 4,797.66 and 890.36 is: 1,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.68 : 4,797.66 = 890.36 : x
  2. Step 2: Convert to fraction form
    3,198.68/4,797.66 = 890.36/x
  3. Step 3: Cross multiply
    3,198.68x = 4,797.66 × 890.36
  4. Step 4: Simplify right side
    3,198.68x = 4,271,644.56
  5. Step 5: Solve for x
    x = 4,271,644.56/3,198.68
  6. Step 6: Final answer
    x = 1,335.44

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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.