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Finding the Fourth Proportional to 3,855.40, 5,319.18 and 2,528.44

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Solution

The fourth proportional to 3,855.40, 5,319.18 and 2,528.44 is: 3,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.40 : 5,319.18 = 2,528.44 : x
  2. Step 2: Convert to fraction form
    3,855.40/5,319.18 = 2,528.44/x
  3. Step 3: Cross multiply
    3,855.40x = 5,319.18 × 2,528.44
  4. Step 4: Simplify right side
    3,855.40x = 13,449,227.48
  5. Step 5: Solve for x
    x = 13,449,227.48/3,855.40
  6. Step 6: Final answer
    x = 3,488.41

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