Home / 7,918.18-11,879.39-2,371.54

Finding the Fourth Proportional to 7,918.18, 11,879.39 and 2,371.54

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Solution

The fourth proportional to 7,918.18, 11,879.39 and 2,371.54 is: 3,557.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.18 : 11,879.39 = 2,371.54 : x
  2. Step 2: Convert to fraction form
    7,918.18/11,879.39 = 2,371.54/x
  3. Step 3: Cross multiply
    7,918.18x = 11,879.39 × 2,371.54
  4. Step 4: Simplify right side
    7,918.18x = 28,172,448.56
  5. Step 5: Solve for x
    x = 28,172,448.56/7,918.18
  6. Step 6: Final answer
    x = 3,557.94

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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.