Home / 2,115.11-3,167.20-1,292.25

Finding the Fourth Proportional to 2,115.11, 3,167.20 and 1,292.25

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Solution

The fourth proportional to 2,115.11, 3,167.20 and 1,292.25 is: 1,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.11 : 3,167.20 = 1,292.25 : x
  2. Step 2: Convert to fraction form
    2,115.11/3,167.20 = 1,292.25/x
  3. Step 3: Cross multiply
    2,115.11x = 3,167.20 × 1,292.25
  4. Step 4: Simplify right side
    2,115.11x = 4,092,827.69
  5. Step 5: Solve for x
    x = 4,092,827.69/2,115.11
  6. Step 6: Final answer
    x = 1,935.04

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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.