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Finding the Fourth Proportional to 2,917.96, 4,379.74 and 1,358.92

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Solution

The fourth proportional to 2,917.96, 4,379.74 and 1,358.92 is: 2,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.96 : 4,379.74 = 1,358.92 : x
  2. Step 2: Convert to fraction form
    2,917.96/4,379.74 = 1,358.92/x
  3. Step 3: Cross multiply
    2,917.96x = 4,379.74 × 1,358.92
  4. Step 4: Simplify right side
    2,917.96x = 5,951,716.28
  5. Step 5: Solve for x
    x = 5,951,716.28/2,917.96
  6. Step 6: Final answer
    x = 2,039.68

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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.