Home / 1,447.37-2,172.26-626.26

Finding the Fourth Proportional to 1,447.37, 2,172.26 and 626.26

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Solution

The fourth proportional to 1,447.37, 2,172.26 and 626.26 is: 939.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.37 : 2,172.26 = 626.26 : x
  2. Step 2: Convert to fraction form
    1,447.37/2,172.26 = 626.26/x
  3. Step 3: Cross multiply
    1,447.37x = 2,172.26 × 626.26
  4. Step 4: Simplify right side
    1,447.37x = 1,360,399.55
  5. Step 5: Solve for x
    x = 1,360,399.55/1,447.37
  6. Step 6: Final answer
    x = 939.91

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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.