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Finding the Fourth Proportional to 3,238.94, 4,855.20 and 1,680.68

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Solution

The fourth proportional to 3,238.94, 4,855.20 and 1,680.68 is: 2,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.94 : 4,855.20 = 1,680.68 : x
  2. Step 2: Convert to fraction form
    3,238.94/4,855.20 = 1,680.68/x
  3. Step 3: Cross multiply
    3,238.94x = 4,855.20 × 1,680.68
  4. Step 4: Simplify right side
    3,238.94x = 8,160,037.54
  5. Step 5: Solve for x
    x = 8,160,037.54/3,238.94
  6. Step 6: Final answer
    x = 2,519.35

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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.