Home / 1,448.28-2,172.48-718.44

Finding the Fourth Proportional to 1,448.28, 2,172.48 and 718.44

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Solution

The fourth proportional to 1,448.28, 2,172.48 and 718.44 is: 1,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.28 : 2,172.48 = 718.44 : x
  2. Step 2: Convert to fraction form
    1,448.28/2,172.48 = 718.44/x
  3. Step 3: Cross multiply
    1,448.28x = 2,172.48 × 718.44
  4. Step 4: Simplify right side
    1,448.28x = 1,560,796.53
  5. Step 5: Solve for x
    x = 1,560,796.53/1,448.28
  6. Step 6: Final answer
    x = 1,077.69

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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.