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Finding the Fourth Proportional to 7,866.19, 11,799.28 and 3,249.31

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Solution

The fourth proportional to 7,866.19, 11,799.28 and 3,249.31 is: 4,873.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.19 : 11,799.28 = 3,249.31 : x
  2. Step 2: Convert to fraction form
    7,866.19/11,799.28 = 3,249.31/x
  3. Step 3: Cross multiply
    7,866.19x = 11,799.28 × 3,249.31
  4. Step 4: Simplify right side
    7,866.19x = 38,339,493.06
  5. Step 5: Solve for x
    x = 38,339,493.06/7,866.19
  6. Step 6: Final answer
    x = 4,873.96

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Double scale
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Similar ratio
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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.