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Finding the Fourth Proportional to 4,179.73, 5,764.80 and 2,687.80

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Solution

The fourth proportional to 4,179.73, 5,764.80 and 2,687.80 is: 3,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,179.73 : 5,764.80 = 2,687.80 : x
  2. Step 2: Convert to fraction form
    4,179.73/5,764.80 = 2,687.80/x
  3. Step 3: Cross multiply
    4,179.73x = 5,764.80 × 2,687.80
  4. Step 4: Simplify right side
    4,179.73x = 15,494,629.44
  5. Step 5: Solve for x
    x = 15,494,629.44/4,179.73
  6. Step 6: Final answer
    x = 3,707.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.