Home / 7,945.14-11,917.82-3,785.58

Finding the Fourth Proportional to 7,945.14, 11,917.82 and 3,785.58

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Solution

The fourth proportional to 7,945.14, 11,917.82 and 3,785.58 is: 5,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.14 : 11,917.82 = 3,785.58 : x
  2. Step 2: Convert to fraction form
    7,945.14/11,917.82 = 3,785.58/x
  3. Step 3: Cross multiply
    7,945.14x = 11,917.82 × 3,785.58
  4. Step 4: Simplify right side
    7,945.14x = 45,115,861.04
  5. Step 5: Solve for x
    x = 45,115,861.04/7,945.14
  6. Step 6: Final answer
    x = 5,678.42

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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.