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Finding the Fourth Proportional to 2,108.58, 3,163.41 and 954.42

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Solution

The fourth proportional to 2,108.58, 3,163.41 and 954.42 is: 1,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.58 : 3,163.41 = 954.42 : x
  2. Step 2: Convert to fraction form
    2,108.58/3,163.41 = 954.42/x
  3. Step 3: Cross multiply
    2,108.58x = 3,163.41 × 954.42
  4. Step 4: Simplify right side
    2,108.58x = 3,019,221.77
  5. Step 5: Solve for x
    x = 3,019,221.77/2,108.58
  6. Step 6: Final answer
    x = 1,431.87

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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.