Home / 3,422.11-5,131.80-1,448.65

Finding the Fourth Proportional to 3,422.11, 5,131.80 and 1,448.65

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Solution

The fourth proportional to 3,422.11, 5,131.80 and 1,448.65 is: 2,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.11 : 5,131.80 = 1,448.65 : x
  2. Step 2: Convert to fraction form
    3,422.11/5,131.80 = 1,448.65/x
  3. Step 3: Cross multiply
    3,422.11x = 5,131.80 × 1,448.65
  4. Step 4: Simplify right side
    3,422.11x = 7,434,149.17
  5. Step 5: Solve for x
    x = 7,434,149.17/3,422.11
  6. Step 6: Final answer
    x = 2,172.39

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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.