Home / 2,042.11-3,078.20-1,992.90

Finding the Fourth Proportional to 2,042.11, 3,078.20 and 1,992.90

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Solution

The fourth proportional to 2,042.11, 3,078.20 and 1,992.90 is: 3,004.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,042.11 : 3,078.20 = 1,992.90 : x
  2. Step 2: Convert to fraction form
    2,042.11/3,078.20 = 1,992.90/x
  3. Step 3: Cross multiply
    2,042.11x = 3,078.20 × 1,992.90
  4. Step 4: Simplify right side
    2,042.11x = 6,134,561.31
  5. Step 5: Solve for x
    x = 6,134,561.31/2,042.11
  6. Step 6: Final answer
    x = 3,004.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.