Home / 8,512.32-12,759.84-5,391.36

Finding the Fourth Proportional to 8,512.32, 12,759.84 and 5,391.36

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Solution

The fourth proportional to 8,512.32, 12,759.84 and 5,391.36 is: 8,081.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.32 : 12,759.84 = 5,391.36 : x
  2. Step 2: Convert to fraction form
    8,512.32/12,759.84 = 5,391.36/x
  3. Step 3: Cross multiply
    8,512.32x = 12,759.84 × 5,391.36
  4. Step 4: Simplify right side
    8,512.32x = 68,792,890.98
  5. Step 5: Solve for x
    x = 68,792,890.98/8,512.32
  6. Step 6: Final answer
    x = 8,081.57

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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.