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Finding the Fourth Proportional to 2,379.41, 3,568.43 and 918.22

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Solution

The fourth proportional to 2,379.41, 3,568.43 and 918.22 is: 1,377.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.41 : 3,568.43 = 918.22 : x
  2. Step 2: Convert to fraction form
    2,379.41/3,568.43 = 918.22/x
  3. Step 3: Cross multiply
    2,379.41x = 3,568.43 × 918.22
  4. Step 4: Simplify right side
    2,379.41x = 3,276,608.12
  5. Step 5: Solve for x
    x = 3,276,608.12/2,379.41
  6. Step 6: Final answer
    x = 1,377.07

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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.