Home / 2,101.96-3,151.11-868.60

Finding the Fourth Proportional to 2,101.96, 3,151.11 and 868.60

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Solution

The fourth proportional to 2,101.96, 3,151.11 and 868.60 is: 1,302.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.96 : 3,151.11 = 868.60 : x
  2. Step 2: Convert to fraction form
    2,101.96/3,151.11 = 868.60/x
  3. Step 3: Cross multiply
    2,101.96x = 3,151.11 × 868.60
  4. Step 4: Simplify right side
    2,101.96x = 2,737,054.15
  5. Step 5: Solve for x
    x = 2,737,054.15/2,101.96
  6. Step 6: Final answer
    x = 1,302.14

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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.