Home / 3,261.12-4,879.47-1,940.05

Finding the Fourth Proportional to 3,261.12, 4,879.47 and 1,940.05

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Solution

The fourth proportional to 3,261.12, 4,879.47 and 1,940.05 is: 2,902.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.12 : 4,879.47 = 1,940.05 : x
  2. Step 2: Convert to fraction form
    3,261.12/4,879.47 = 1,940.05/x
  3. Step 3: Cross multiply
    3,261.12x = 4,879.47 × 1,940.05
  4. Step 4: Simplify right side
    3,261.12x = 9,466,415.77
  5. Step 5: Solve for x
    x = 9,466,415.77/3,261.12
  6. Step 6: Final answer
    x = 2,902.81

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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.