Home / 7,819.82-11,728.65-1,976.08

Finding the Fourth Proportional to 7,819.82, 11,728.65 and 1,976.08

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Solution

The fourth proportional to 7,819.82, 11,728.65 and 1,976.08 is: 2,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.82 : 11,728.65 = 1,976.08 : x
  2. Step 2: Convert to fraction form
    7,819.82/11,728.65 = 1,976.08/x
  3. Step 3: Cross multiply
    7,819.82x = 11,728.65 × 1,976.08
  4. Step 4: Simplify right side
    7,819.82x = 23,176,692.05
  5. Step 5: Solve for x
    x = 23,176,692.05/7,819.82
  6. Step 6: Final answer
    x = 2,963.84

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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.