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Finding the Fourth Proportional to 2,959.41, 4,438.29 and 879.33

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Solution

The fourth proportional to 2,959.41, 4,438.29 and 879.33 is: 1,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.41 : 4,438.29 = 879.33 : x
  2. Step 2: Convert to fraction form
    2,959.41/4,438.29 = 879.33/x
  3. Step 3: Cross multiply
    2,959.41x = 4,438.29 × 879.33
  4. Step 4: Simplify right side
    2,959.41x = 3,902,721.55
  5. Step 5: Solve for x
    x = 3,902,721.55/2,959.41
  6. Step 6: Final answer
    x = 1,318.75

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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.