Home / 7,855.25-11,788.49-2,857.61

Finding the Fourth Proportional to 7,855.25, 11,788.49 and 2,857.61

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Solution

The fourth proportional to 7,855.25, 11,788.49 and 2,857.61 is: 4,288.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.25 : 11,788.49 = 2,857.61 : x
  2. Step 2: Convert to fraction form
    7,855.25/11,788.49 = 2,857.61/x
  3. Step 3: Cross multiply
    7,855.25x = 11,788.49 × 2,857.61
  4. Step 4: Simplify right side
    7,855.25x = 33,686,947.54
  5. Step 5: Solve for x
    x = 33,686,947.54/7,855.25
  6. Step 6: Final answer
    x = 4,288.46

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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.