Home / 3,621.07-5,431.20-1,672.75

Finding the Fourth Proportional to 3,621.07, 5,431.20 and 1,672.75

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Solution

The fourth proportional to 3,621.07, 5,431.20 and 1,672.75 is: 2,508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.07 : 5,431.20 = 1,672.75 : x
  2. Step 2: Convert to fraction form
    3,621.07/5,431.20 = 1,672.75/x
  3. Step 3: Cross multiply
    3,621.07x = 5,431.20 × 1,672.75
  4. Step 4: Simplify right side
    3,621.07x = 9,085,039.80
  5. Step 5: Solve for x
    x = 9,085,039.80/3,621.07
  6. Step 6: Final answer
    x = 2,508.94

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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.