Home / 2,116.62-3,175.05-729.30

Finding the Fourth Proportional to 2,116.62, 3,175.05 and 729.30

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Solution

The fourth proportional to 2,116.62, 3,175.05 and 729.30 is: 1,093.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.62 : 3,175.05 = 729.30 : x
  2. Step 2: Convert to fraction form
    2,116.62/3,175.05 = 729.30/x
  3. Step 3: Cross multiply
    2,116.62x = 3,175.05 × 729.30
  4. Step 4: Simplify right side
    2,116.62x = 2,315,563.97
  5. Step 5: Solve for x
    x = 2,315,563.97/2,116.62
  6. Step 6: Final answer
    x = 1,093.99

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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.