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Finding the Fourth Proportional to 7,855.56, 11,788.38 and 3,238.44

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Solution

The fourth proportional to 7,855.56, 11,788.38 and 3,238.44 is: 4,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.56 : 11,788.38 = 3,238.44 : x
  2. Step 2: Convert to fraction form
    7,855.56/11,788.38 = 3,238.44/x
  3. Step 3: Cross multiply
    7,855.56x = 11,788.38 × 3,238.44
  4. Step 4: Simplify right side
    7,855.56x = 38,175,961.33
  5. Step 5: Solve for x
    x = 38,175,961.33/7,855.56
  6. Step 6: Final answer
    x = 4,859.74

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1.5x scale

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.