Home / 3,280.68-4,920.78-1,200.60

Finding the Fourth Proportional to 3,280.68, 4,920.78 and 1,200.60

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Solution

The fourth proportional to 3,280.68, 4,920.78 and 1,200.60 is: 1,800.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.68 : 4,920.78 = 1,200.60 : x
  2. Step 2: Convert to fraction form
    3,280.68/4,920.78 = 1,200.60/x
  3. Step 3: Cross multiply
    3,280.68x = 4,920.78 × 1,200.60
  4. Step 4: Simplify right side
    3,280.68x = 5,907,888.47
  5. Step 5: Solve for x
    x = 5,907,888.47/3,280.68
  6. Step 6: Final answer
    x = 1,800.81

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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.