Home / 1,448.10-2,172.20-626.39

Finding the Fourth Proportional to 1,448.10, 2,172.20 and 626.39

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Solution

The fourth proportional to 1,448.10, 2,172.20 and 626.39 is: 939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.10 : 2,172.20 = 626.39 : x
  2. Step 2: Convert to fraction form
    1,448.10/2,172.20 = 626.39/x
  3. Step 3: Cross multiply
    1,448.10x = 2,172.20 × 626.39
  4. Step 4: Simplify right side
    1,448.10x = 1,360,646.66
  5. Step 5: Solve for x
    x = 1,360,646.66/1,448.10
  6. Step 6: Final answer
    x = 939.61

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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.