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Finding the Fourth Proportional to 3,724.87, 5,578.79 and 1,778.44

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Solution

The fourth proportional to 3,724.87, 5,578.79 and 1,778.44 is: 2,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.87 : 5,578.79 = 1,778.44 : x
  2. Step 2: Convert to fraction form
    3,724.87/5,578.79 = 1,778.44/x
  3. Step 3: Cross multiply
    3,724.87x = 5,578.79 × 1,778.44
  4. Step 4: Simplify right side
    3,724.87x = 9,921,519.84
  5. Step 5: Solve for x
    x = 9,921,519.84/3,724.87
  6. Step 6: Final answer
    x = 2,663.59

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1.5x scale

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.