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Finding the Fourth Proportional to 3,855.92, 5,778.95 and 1,662.44

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Solution

The fourth proportional to 3,855.92, 5,778.95 and 1,662.44 is: 2,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.92 : 5,778.95 = 1,662.44 : x
  2. Step 2: Convert to fraction form
    3,855.92/5,778.95 = 1,662.44/x
  3. Step 3: Cross multiply
    3,855.92x = 5,778.95 × 1,662.44
  4. Step 4: Simplify right side
    3,855.92x = 9,607,120.43
  5. Step 5: Solve for x
    x = 9,607,120.43/3,855.92
  6. Step 6: Final answer
    x = 2,491.53

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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.