Home / 7,961.85-11,939.54-3,578.13

Finding the Fourth Proportional to 7,961.85, 11,939.54 and 3,578.13

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Solution

The fourth proportional to 7,961.85, 11,939.54 and 3,578.13 is: 5,365.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.85 : 11,939.54 = 3,578.13 : x
  2. Step 2: Convert to fraction form
    7,961.85/11,939.54 = 3,578.13/x
  3. Step 3: Cross multiply
    7,961.85x = 11,939.54 × 3,578.13
  4. Step 4: Simplify right side
    7,961.85x = 42,721,208.37
  5. Step 5: Solve for x
    x = 42,721,208.37/7,961.85
  6. Step 6: Final answer
    x = 5,365.74

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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.