Home / 2,261.62-3,390.19-1,091.31

Finding the Fourth Proportional to 2,261.62, 3,390.19 and 1,091.31

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Solution

The fourth proportional to 2,261.62, 3,390.19 and 1,091.31 is: 1,635.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.62 : 3,390.19 = 1,091.31 : x
  2. Step 2: Convert to fraction form
    2,261.62/3,390.19 = 1,091.31/x
  3. Step 3: Cross multiply
    2,261.62x = 3,390.19 × 1,091.31
  4. Step 4: Simplify right side
    2,261.62x = 3,699,732.81
  5. Step 5: Solve for x
    x = 3,699,732.81/2,261.62
  6. Step 6: Final answer
    x = 1,635.88

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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.