Home / 1,448.29-2,172.81-626.37

Finding the Fourth Proportional to 1,448.29, 2,172.81 and 626.37

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Solution

The fourth proportional to 1,448.29, 2,172.81 and 626.37 is: 939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.29 : 2,172.81 = 626.37 : x
  2. Step 2: Convert to fraction form
    1,448.29/2,172.81 = 626.37/x
  3. Step 3: Cross multiply
    1,448.29x = 2,172.81 × 626.37
  4. Step 4: Simplify right side
    1,448.29x = 1,360,973.68
  5. Step 5: Solve for x
    x = 1,360,973.68/1,448.29
  6. Step 6: Final answer
    x = 939.71

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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.