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Finding the Fourth Proportional to 2,958.92, 4,438.22 and 878.94

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Solution

The fourth proportional to 2,958.92, 4,438.22 and 878.94 is: 1,318.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958.92 : 4,438.22 = 878.94 : x
  2. Step 2: Convert to fraction form
    2,958.92/4,438.22 = 878.94/x
  3. Step 3: Cross multiply
    2,958.92x = 4,438.22 × 878.94
  4. Step 4: Simplify right side
    2,958.92x = 3,900,924.69
  5. Step 5: Solve for x
    x = 3,900,924.69/2,958.92
  6. Step 6: Final answer
    x = 1,318.36

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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.