Home / 7,767.08-11,648.39-3,815.90

Finding the Fourth Proportional to 7,767.08, 11,648.39 and 3,815.90

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Solution

The fourth proportional to 7,767.08, 11,648.39 and 3,815.90 is: 5,722.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.08 : 11,648.39 = 3,815.90 : x
  2. Step 2: Convert to fraction form
    7,767.08/11,648.39 = 3,815.90/x
  3. Step 3: Cross multiply
    7,767.08x = 11,648.39 × 3,815.90
  4. Step 4: Simplify right side
    7,767.08x = 44,449,014.08
  5. Step 5: Solve for x
    x = 44,449,014.08/7,767.08
  6. Step 6: Final answer
    x = 5,722.75

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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.