Home / 2,112.62-3,168.12-1,461.38

Finding the Fourth Proportional to 2,112.62, 3,168.12 and 1,461.38

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Solution

The fourth proportional to 2,112.62, 3,168.12 and 1,461.38 is: 2,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.62 : 3,168.12 = 1,461.38 : x
  2. Step 2: Convert to fraction form
    2,112.62/3,168.12 = 1,461.38/x
  3. Step 3: Cross multiply
    2,112.62x = 3,168.12 × 1,461.38
  4. Step 4: Simplify right side
    2,112.62x = 4,629,827.21
  5. Step 5: Solve for x
    x = 4,629,827.21/2,112.62
  6. Step 6: Final answer
    x = 2,191.51

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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.