Home / 7,879.38-11,811.75-2,945.27

Finding the Fourth Proportional to 7,879.38, 11,811.75 and 2,945.27

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Solution

The fourth proportional to 7,879.38, 11,811.75 and 2,945.27 is: 4,415.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.38 : 11,811.75 = 2,945.27 : x
  2. Step 2: Convert to fraction form
    7,879.38/11,811.75 = 2,945.27/x
  3. Step 3: Cross multiply
    7,879.38x = 11,811.75 × 2,945.27
  4. Step 4: Simplify right side
    7,879.38x = 34,788,733.86
  5. Step 5: Solve for x
    x = 34,788,733.86/7,879.38
  6. Step 6: Final answer
    x = 4,415.16

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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.