Home / 1,816.72-2,721.60-1,489.44

Finding the Fourth Proportional to 1,816.72, 2,721.60 and 1,489.44

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Solution

The fourth proportional to 1,816.72, 2,721.60 and 1,489.44 is: 2,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.72 : 2,721.60 = 1,489.44 : x
  2. Step 2: Convert to fraction form
    1,816.72/2,721.60 = 1,489.44/x
  3. Step 3: Cross multiply
    1,816.72x = 2,721.60 × 1,489.44
  4. Step 4: Simplify right side
    1,816.72x = 4,053,659.90
  5. Step 5: Solve for x
    x = 4,053,659.90/1,816.72
  6. Step 6: Final answer
    x = 2,231.31

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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.