Home / 2,261.17-3,388.92-1,287.82

Finding the Fourth Proportional to 2,261.17, 3,388.92 and 1,287.82

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Solution

The fourth proportional to 2,261.17, 3,388.92 and 1,287.82 is: 1,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.17 : 3,388.92 = 1,287.82 : x
  2. Step 2: Convert to fraction form
    2,261.17/3,388.92 = 1,287.82/x
  3. Step 3: Cross multiply
    2,261.17x = 3,388.92 × 1,287.82
  4. Step 4: Simplify right side
    2,261.17x = 4,364,318.95
  5. Step 5: Solve for x
    x = 4,364,318.95/2,261.17
  6. Step 6: Final answer
    x = 1,930.12

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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.