Home / 7,781.24-11,679.14-3,624.11

Finding the Fourth Proportional to 7,781.24, 11,679.14 and 3,624.11

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Solution

The fourth proportional to 7,781.24, 11,679.14 and 3,624.11 is: 5,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.24 : 11,679.14 = 3,624.11 : x
  2. Step 2: Convert to fraction form
    7,781.24/11,679.14 = 3,624.11/x
  3. Step 3: Cross multiply
    7,781.24x = 11,679.14 × 3,624.11
  4. Step 4: Simplify right side
    7,781.24x = 42,326,526.32
  5. Step 5: Solve for x
    x = 42,326,526.32/7,781.24
  6. Step 6: Final answer
    x = 5,439.56

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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.