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Finding the Fourth Proportional to 2,874.26, 4,311.94 and 925.94

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Solution

The fourth proportional to 2,874.26, 4,311.94 and 925.94 is: 1,389.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.26 : 4,311.94 = 925.94 : x
  2. Step 2: Convert to fraction form
    2,874.26/4,311.94 = 925.94/x
  3. Step 3: Cross multiply
    2,874.26x = 4,311.94 × 925.94
  4. Step 4: Simplify right side
    2,874.26x = 3,992,597.72
  5. Step 5: Solve for x
    x = 3,992,597.72/2,874.26
  6. Step 6: Final answer
    x = 1,389.09

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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.