Home / 1,122.20-1,680.68-1,083.27

Finding the Fourth Proportional to 1,122.20, 1,680.68 and 1,083.27

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Solution

The fourth proportional to 1,122.20, 1,680.68 and 1,083.27 is: 1,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.20 : 1,680.68 = 1,083.27 : x
  2. Step 2: Convert to fraction form
    1,122.20/1,680.68 = 1,083.27/x
  3. Step 3: Cross multiply
    1,122.20x = 1,680.68 × 1,083.27
  4. Step 4: Simplify right side
    1,122.20x = 1,820,630.22
  5. Step 5: Solve for x
    x = 1,820,630.22/1,122.20
  6. Step 6: Final answer
    x = 1,622.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.