Home / 3,187.92-4,775.40-2,092.80

Finding the Fourth Proportional to 3,187.92, 4,775.40 and 2,092.80

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Solution

The fourth proportional to 3,187.92, 4,775.40 and 2,092.80 is: 3,134.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.92 : 4,775.40 = 2,092.80 : x
  2. Step 2: Convert to fraction form
    3,187.92/4,775.40 = 2,092.80/x
  3. Step 3: Cross multiply
    3,187.92x = 4,775.40 × 2,092.80
  4. Step 4: Simplify right side
    3,187.92x = 9,993,957.12
  5. Step 5: Solve for x
    x = 9,993,957.12/3,187.92
  6. Step 6: Final answer
    x = 3,134.95

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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.