Home / 7,945.29-11,917.94-2,101.85

Finding the Fourth Proportional to 7,945.29, 11,917.94 and 2,101.85

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Solution

The fourth proportional to 7,945.29, 11,917.94 and 2,101.85 is: 3,152.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.29 : 11,917.94 = 2,101.85 : x
  2. Step 2: Convert to fraction form
    7,945.29/11,917.94 = 2,101.85/x
  3. Step 3: Cross multiply
    7,945.29x = 11,917.94 × 2,101.85
  4. Step 4: Simplify right side
    7,945.29x = 25,049,696.78
  5. Step 5: Solve for x
    x = 25,049,696.78/7,945.29
  6. Step 6: Final answer
    x = 3,152.77

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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.