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Finding the Fourth Proportional to 2,578.36, 3,866 and 934.35

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Solution

The fourth proportional to 2,578.36, 3,866 and 934.35 is: 1,400.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.36 : 3,866 = 934.35 : x
  2. Step 2: Convert to fraction form
    2,578.36/3,866 = 934.35/x
  3. Step 3: Cross multiply
    2,578.36x = 3,866 × 934.35
  4. Step 4: Simplify right side
    2,578.36x = 3,612,197.10
  5. Step 5: Solve for x
    x = 3,612,197.10/2,578.36
  6. Step 6: Final answer
    x = 1,400.97

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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.