Home / 7,905.87-11,855.48-3,222.68

Finding the Fourth Proportional to 7,905.87, 11,855.48 and 3,222.68

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Solution

The fourth proportional to 7,905.87, 11,855.48 and 3,222.68 is: 4,832.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.87 : 11,855.48 = 3,222.68 : x
  2. Step 2: Convert to fraction form
    7,905.87/11,855.48 = 3,222.68/x
  3. Step 3: Cross multiply
    7,905.87x = 11,855.48 × 3,222.68
  4. Step 4: Simplify right side
    7,905.87x = 38,206,342.90
  5. Step 5: Solve for x
    x = 38,206,342.90/7,905.87
  6. Step 6: Final answer
    x = 4,832.66

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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.