Home / 3,421.26-5,131.49-1,342.80

Finding the Fourth Proportional to 3,421.26, 5,131.49 and 1,342.80

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Solution

The fourth proportional to 3,421.26, 5,131.49 and 1,342.80 is: 2,014.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.26 : 5,131.49 = 1,342.80 : x
  2. Step 2: Convert to fraction form
    3,421.26/5,131.49 = 1,342.80/x
  3. Step 3: Cross multiply
    3,421.26x = 5,131.49 × 1,342.80
  4. Step 4: Simplify right side
    3,421.26x = 6,890,558.06
  5. Step 5: Solve for x
    x = 6,890,558.06/3,421.26
  6. Step 6: Final answer
    x = 2,014.04

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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.