Home / 8,721.61-13,084.37-3,175

Finding the Fourth Proportional to 8,721.61, 13,084.37 and 3,175

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Solution

The fourth proportional to 8,721.61, 13,084.37 and 3,175 is: 4,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.61 : 13,084.37 = 3,175 : x
  2. Step 2: Convert to fraction form
    8,721.61/13,084.37 = 3,175/x
  3. Step 3: Cross multiply
    8,721.61x = 13,084.37 × 3,175
  4. Step 4: Simplify right side
    8,721.61x = 41,542,874.75
  5. Step 5: Solve for x
    x = 41,542,874.75/8,721.61
  6. Step 6: Final answer
    x = 4,763.21

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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.