Home / 1,721.82-2,583.20-1,228.85

Finding the Fourth Proportional to 1,721.82, 2,583.20 and 1,228.85

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Solution

The fourth proportional to 1,721.82, 2,583.20 and 1,228.85 is: 1,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.82 : 2,583.20 = 1,228.85 : x
  2. Step 2: Convert to fraction form
    1,721.82/2,583.20 = 1,228.85/x
  3. Step 3: Cross multiply
    1,721.82x = 2,583.20 × 1,228.85
  4. Step 4: Simplify right side
    1,721.82x = 3,174,346.26
  5. Step 5: Solve for x
    x = 3,174,346.26/1,721.82
  6. Step 6: Final answer
    x = 1,843.60

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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.