Home / 2,789.83-4,180.50-1,909.22

Finding the Fourth Proportional to 2,789.83, 4,180.50 and 1,909.22

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Solution

The fourth proportional to 2,789.83, 4,180.50 and 1,909.22 is: 2,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.83 : 4,180.50 = 1,909.22 : x
  2. Step 2: Convert to fraction form
    2,789.83/4,180.50 = 1,909.22/x
  3. Step 3: Cross multiply
    2,789.83x = 4,180.50 × 1,909.22
  4. Step 4: Simplify right side
    2,789.83x = 7,981,504.66
  5. Step 5: Solve for x
    x = 7,981,504.66/2,789.83
  6. Step 6: Final answer
    x = 2,860.93

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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.