Home / 7,839.86-11,755.01-3,331.60

Finding the Fourth Proportional to 7,839.86, 11,755.01 and 3,331.60

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Solution

The fourth proportional to 7,839.86, 11,755.01 and 3,331.60 is: 4,995.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.86 : 11,755.01 = 3,331.60 : x
  2. Step 2: Convert to fraction form
    7,839.86/11,755.01 = 3,331.60/x
  3. Step 3: Cross multiply
    7,839.86x = 11,755.01 × 3,331.60
  4. Step 4: Simplify right side
    7,839.86x = 39,162,970.26
  5. Step 5: Solve for x
    x = 39,162,970.26/7,839.86
  6. Step 6: Final answer
    x = 4,995.37

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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.