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Finding the Fourth Proportional to 2,578.32, 3,869.10 and 934.97

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Solution

The fourth proportional to 2,578.32, 3,869.10 and 934.97 is: 1,403.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.32 : 3,869.10 = 934.97 : x
  2. Step 2: Convert to fraction form
    2,578.32/3,869.10 = 934.97/x
  3. Step 3: Cross multiply
    2,578.32x = 3,869.10 × 934.97
  4. Step 4: Simplify right side
    2,578.32x = 3,617,473.08
  5. Step 5: Solve for x
    x = 3,617,473.08/2,578.32
  6. Step 6: Final answer
    x = 1,403.03

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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.