Home / 2,261.99-3,393.96-1,221.78

Finding the Fourth Proportional to 2,261.99, 3,393.96 and 1,221.78

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Solution

The fourth proportional to 2,261.99, 3,393.96 and 1,221.78 is: 1,833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.99 : 3,393.96 = 1,221.78 : x
  2. Step 2: Convert to fraction form
    2,261.99/3,393.96 = 1,221.78/x
  3. Step 3: Cross multiply
    2,261.99x = 3,393.96 × 1,221.78
  4. Step 4: Simplify right side
    2,261.99x = 4,146,672.45
  5. Step 5: Solve for x
    x = 4,146,672.45/2,261.99
  6. Step 6: Final answer
    x = 1,833.20

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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.