Home / 7,791.32-11,685.54-4,081.88

Finding the Fourth Proportional to 7,791.32, 11,685.54 and 4,081.88

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Solution

The fourth proportional to 7,791.32, 11,685.54 and 4,081.88 is: 6,122.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.32 : 11,685.54 = 4,081.88 : x
  2. Step 2: Convert to fraction form
    7,791.32/11,685.54 = 4,081.88/x
  3. Step 3: Cross multiply
    7,791.32x = 11,685.54 × 4,081.88
  4. Step 4: Simplify right side
    7,791.32x = 47,698,972.02
  5. Step 5: Solve for x
    x = 47,698,972.02/7,791.32
  6. Step 6: Final answer
    x = 6,122.07

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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.