Home / 3,280.85-4,920.08-1,200.24

Finding the Fourth Proportional to 3,280.85, 4,920.08 and 1,200.24

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Solution

The fourth proportional to 3,280.85, 4,920.08 and 1,200.24 is: 1,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.85 : 4,920.08 = 1,200.24 : x
  2. Step 2: Convert to fraction form
    3,280.85/4,920.08 = 1,200.24/x
  3. Step 3: Cross multiply
    3,280.85x = 4,920.08 × 1,200.24
  4. Step 4: Simplify right side
    3,280.85x = 5,905,284.66
  5. Step 5: Solve for x
    x = 5,905,284.66/3,280.85
  6. Step 6: Final answer
    x = 1,799.92

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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.