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Finding the Fourth Proportional to 3,295.20, 4,942.80 and 2,992.80

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Solution

The fourth proportional to 3,295.20, 4,942.80 and 2,992.80 is: 4,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,295.20 : 4,942.80 = 2,992.80 : x
  2. Step 2: Convert to fraction form
    3,295.20/4,942.80 = 2,992.80/x
  3. Step 3: Cross multiply
    3,295.20x = 4,942.80 × 2,992.80
  4. Step 4: Simplify right side
    3,295.20x = 14,792,811.84
  5. Step 5: Solve for x
    x = 14,792,811.84/3,295.20
  6. Step 6: Final answer
    x = 4,489.20

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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.