Home / 3,481.65-5,225-1,290.69

Finding the Fourth Proportional to 3,481.65, 5,225 and 1,290.69

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Solution

The fourth proportional to 3,481.65, 5,225 and 1,290.69 is: 1,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.65 : 5,225 = 1,290.69 : x
  2. Step 2: Convert to fraction form
    3,481.65/5,225 = 1,290.69/x
  3. Step 3: Cross multiply
    3,481.65x = 5,225 × 1,290.69
  4. Step 4: Simplify right side
    3,481.65x = 6,743,855.25
  5. Step 5: Solve for x
    x = 6,743,855.25/3,481.65
  6. Step 6: Final answer
    x = 1,936.97

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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.