Home / 1,489.28-2,230.72-1,448.32

Finding the Fourth Proportional to 1,489.28, 2,230.72 and 1,448.32

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Solution

The fourth proportional to 1,489.28, 2,230.72 and 1,448.32 is: 2,169.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.28 : 2,230.72 = 1,448.32 : x
  2. Step 2: Convert to fraction form
    1,489.28/2,230.72 = 1,448.32/x
  3. Step 3: Cross multiply
    1,489.28x = 2,230.72 × 1,448.32
  4. Step 4: Simplify right side
    1,489.28x = 3,230,796.39
  5. Step 5: Solve for x
    x = 3,230,796.39/1,489.28
  6. Step 6: Final answer
    x = 2,169.37

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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.