Home / 7,881.75-11,821.32-3,201.57

Finding the Fourth Proportional to 7,881.75, 11,821.32 and 3,201.57

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Solution

The fourth proportional to 7,881.75, 11,821.32 and 3,201.57 is: 4,801.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.75 : 11,821.32 = 3,201.57 : x
  2. Step 2: Convert to fraction form
    7,881.75/11,821.32 = 3,201.57/x
  3. Step 3: Cross multiply
    7,881.75x = 11,821.32 × 3,201.57
  4. Step 4: Simplify right side
    7,881.75x = 37,846,783.47
  5. Step 5: Solve for x
    x = 37,846,783.47/7,881.75
  6. Step 6: Final answer
    x = 4,801.82

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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.