Home / 8,721.42-13,085.62-3,175.14

Finding the Fourth Proportional to 8,721.42, 13,085.62 and 3,175.14

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Solution

The fourth proportional to 8,721.42, 13,085.62 and 3,175.14 is: 4,763.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.42 : 13,085.62 = 3,175.14 : x
  2. Step 2: Convert to fraction form
    8,721.42/13,085.62 = 3,175.14/x
  3. Step 3: Cross multiply
    8,721.42x = 13,085.62 × 3,175.14
  4. Step 4: Simplify right side
    8,721.42x = 41,548,716.62
  5. Step 5: Solve for x
    x = 41,548,716.62/8,721.42
  6. Step 6: Final answer
    x = 4,763.99

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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.