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Finding the Fourth Proportional to 2,216.73, 3,325.10 and 918.21

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Solution

The fourth proportional to 2,216.73, 3,325.10 and 918.21 is: 1,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.73 : 3,325.10 = 918.21 : x
  2. Step 2: Convert to fraction form
    2,216.73/3,325.10 = 918.21/x
  3. Step 3: Cross multiply
    2,216.73x = 3,325.10 × 918.21
  4. Step 4: Simplify right side
    2,216.73x = 3,053,135.48
  5. Step 5: Solve for x
    x = 3,053,135.48/2,216.73
  6. Step 6: Final answer
    x = 1,377.32

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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.