Home / 3,285.20-4,920.60-2,550.80

Finding the Fourth Proportional to 3,285.20, 4,920.60 and 2,550.80

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Solution

The fourth proportional to 3,285.20, 4,920.60 and 2,550.80 is: 3,820.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.20 : 4,920.60 = 2,550.80 : x
  2. Step 2: Convert to fraction form
    3,285.20/4,920.60 = 2,550.80/x
  3. Step 3: Cross multiply
    3,285.20x = 4,920.60 × 2,550.80
  4. Step 4: Simplify right side
    3,285.20x = 12,551,466.48
  5. Step 5: Solve for x
    x = 12,551,466.48/3,285.20
  6. Step 6: Final answer
    x = 3,820.61

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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.