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Finding the Fourth Proportional to 2,104.25, 3,157.03 and 872.24

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Solution

The fourth proportional to 2,104.25, 3,157.03 and 872.24 is: 1,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.25 : 3,157.03 = 872.24 : x
  2. Step 2: Convert to fraction form
    2,104.25/3,157.03 = 872.24/x
  3. Step 3: Cross multiply
    2,104.25x = 3,157.03 × 872.24
  4. Step 4: Simplify right side
    2,104.25x = 2,753,687.85
  5. Step 5: Solve for x
    x = 2,753,687.85/2,104.25
  6. Step 6: Final answer
    x = 1,308.63

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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.