Home / 8,517.20-11,759.24-5,378

Finding the Fourth Proportional to 8,517.20, 11,759.24 and 5,378

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Solution

The fourth proportional to 8,517.20, 11,759.24 and 5,378 is: 7,425.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.20 : 11,759.24 = 5,378 : x
  2. Step 2: Convert to fraction form
    8,517.20/11,759.24 = 5,378/x
  3. Step 3: Cross multiply
    8,517.20x = 11,759.24 × 5,378
  4. Step 4: Simplify right side
    8,517.20x = 63,241,192.72
  5. Step 5: Solve for x
    x = 63,241,192.72/8,517.20
  6. Step 6: Final answer
    x = 7,425.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.