Home / 7,628.13-11,432.00-3,240.09

Finding the Fourth Proportional to 7,628.13, 11,432.00 and 3,240.09

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Solution

The fourth proportional to 7,628.13, 11,432.00 and 3,240.09 is: 4,855.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.13 : 11,432.00 = 3,240.09 : x
  2. Step 2: Convert to fraction form
    7,628.13/11,432.00 = 3,240.09/x
  3. Step 3: Cross multiply
    7,628.13x = 11,432.00 × 3,240.09
  4. Step 4: Simplify right side
    7,628.13x = 37,040,716.98
  5. Step 5: Solve for x
    x = 37,040,716.98/7,628.13
  6. Step 6: Final answer
    x = 4,855.81

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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.