Home / 7,765.11-11,611.90-5,767.58

Finding the Fourth Proportional to 7,765.11, 11,611.90 and 5,767.58

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Solution

The fourth proportional to 7,765.11, 11,611.90 and 5,767.58 is: 8,624.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.11 : 11,611.90 = 5,767.58 : x
  2. Step 2: Convert to fraction form
    7,765.11/11,611.90 = 5,767.58/x
  3. Step 3: Cross multiply
    7,765.11x = 11,611.90 × 5,767.58
  4. Step 4: Simplify right side
    7,765.11x = 66,972,562.20
  5. Step 5: Solve for x
    x = 66,972,562.20/7,765.11
  6. Step 6: Final answer
    x = 8,624.81

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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.