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Finding the Fourth Proportional to 2,855.25, 3,936.60 and 2,264.76

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Solution

The fourth proportional to 2,855.25, 3,936.60 and 2,264.76 is: 3,122.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.25 : 3,936.60 = 2,264.76 : x
  2. Step 2: Convert to fraction form
    2,855.25/3,936.60 = 2,264.76/x
  3. Step 3: Cross multiply
    2,855.25x = 3,936.60 × 2,264.76
  4. Step 4: Simplify right side
    2,855.25x = 8,915,454.22
  5. Step 5: Solve for x
    x = 8,915,454.22/2,855.25
  6. Step 6: Final answer
    x = 3,122.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.