Home / 3,163.41-4,743.09-1,315.80

Finding the Fourth Proportional to 3,163.41, 4,743.09 and 1,315.80

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Solution

The fourth proportional to 3,163.41, 4,743.09 and 1,315.80 is: 1,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.41 : 4,743.09 = 1,315.80 : x
  2. Step 2: Convert to fraction form
    3,163.41/4,743.09 = 1,315.80/x
  3. Step 3: Cross multiply
    3,163.41x = 4,743.09 × 1,315.80
  4. Step 4: Simplify right side
    3,163.41x = 6,240,957.82
  5. Step 5: Solve for x
    x = 6,240,957.82/3,163.41
  6. Step 6: Final answer
    x = 1,972.86

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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.