Home / 3,639.26-5,455.37-1,172.41

Finding the Fourth Proportional to 3,639.26, 5,455.37 and 1,172.41

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Solution

The fourth proportional to 3,639.26, 5,455.37 and 1,172.41 is: 1,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.26 : 5,455.37 = 1,172.41 : x
  2. Step 2: Convert to fraction form
    3,639.26/5,455.37 = 1,172.41/x
  3. Step 3: Cross multiply
    3,639.26x = 5,455.37 × 1,172.41
  4. Step 4: Simplify right side
    3,639.26x = 6,395,903.06
  5. Step 5: Solve for x
    x = 6,395,903.06/3,639.26
  6. Step 6: Final answer
    x = 1,757.47

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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.