Home / 3,424.26-5,136.78-1,115.76

Finding the Fourth Proportional to 3,424.26, 5,136.78 and 1,115.76

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Solution

The fourth proportional to 3,424.26, 5,136.78 and 1,115.76 is: 1,673.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.26 : 5,136.78 = 1,115.76 : x
  2. Step 2: Convert to fraction form
    3,424.26/5,136.78 = 1,115.76/x
  3. Step 3: Cross multiply
    3,424.26x = 5,136.78 × 1,115.76
  4. Step 4: Simplify right side
    3,424.26x = 5,731,413.65
  5. Step 5: Solve for x
    x = 5,731,413.65/3,424.26
  6. Step 6: Final answer
    x = 1,673.77

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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.