Home / 1,790.09-2,469.55-1,231.29

Finding the Fourth Proportional to 1,790.09, 2,469.55 and 1,231.29

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Solution

The fourth proportional to 1,790.09, 2,469.55 and 1,231.29 is: 1,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.09 : 2,469.55 = 1,231.29 : x
  2. Step 2: Convert to fraction form
    1,790.09/2,469.55 = 1,231.29/x
  3. Step 3: Cross multiply
    1,790.09x = 2,469.55 × 1,231.29
  4. Step 4: Simplify right side
    1,790.09x = 3,040,732.22
  5. Step 5: Solve for x
    x = 3,040,732.22/1,790.09
  6. Step 6: Final answer
    x = 1,698.65

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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.