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Finding the Fourth Proportional to 2,116.75, 3,175.14 and 868.03

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Solution

The fourth proportional to 2,116.75, 3,175.14 and 868.03 is: 1,302.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.75 : 3,175.14 = 868.03 : x
  2. Step 2: Convert to fraction form
    2,116.75/3,175.14 = 868.03/x
  3. Step 3: Cross multiply
    2,116.75x = 3,175.14 × 868.03
  4. Step 4: Simplify right side
    2,116.75x = 2,756,107.21
  5. Step 5: Solve for x
    x = 2,756,107.21/2,116.75
  6. Step 6: Final answer
    x = 1,302.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.