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Finding the Fourth Proportional to 3,879.66, 5,819.43 and 957.96

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Solution

The fourth proportional to 3,879.66, 5,819.43 and 957.96 is: 1,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.66 : 5,819.43 = 957.96 : x
  2. Step 2: Convert to fraction form
    3,879.66/5,819.43 = 957.96/x
  3. Step 3: Cross multiply
    3,879.66x = 5,819.43 × 957.96
  4. Step 4: Simplify right side
    3,879.66x = 5,574,781.16
  5. Step 5: Solve for x
    x = 5,574,781.16/3,879.66
  6. Step 6: Final answer
    x = 1,436.93

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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.