Home / 1,890.26-2,606.82-1,181.88

Finding the Fourth Proportional to 1,890.26, 2,606.82 and 1,181.88

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Solution

The fourth proportional to 1,890.26, 2,606.82 and 1,181.88 is: 1,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.26 : 2,606.82 = 1,181.88 : x
  2. Step 2: Convert to fraction form
    1,890.26/2,606.82 = 1,181.88/x
  3. Step 3: Cross multiply
    1,890.26x = 2,606.82 × 1,181.88
  4. Step 4: Simplify right side
    1,890.26x = 3,080,951.68
  5. Step 5: Solve for x
    x = 3,080,951.68/1,890.26
  6. Step 6: Final answer
    x = 1,629.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.