Home / 2,791.10-4,202.98-2,065.78

Finding the Fourth Proportional to 2,791.10, 4,202.98 and 2,065.78

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Solution

The fourth proportional to 2,791.10, 4,202.98 and 2,065.78 is: 3,110.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.10 : 4,202.98 = 2,065.78 : x
  2. Step 2: Convert to fraction form
    2,791.10/4,202.98 = 2,065.78/x
  3. Step 3: Cross multiply
    2,791.10x = 4,202.98 × 2,065.78
  4. Step 4: Simplify right side
    2,791.10x = 8,682,432.02
  5. Step 5: Solve for x
    x = 8,682,432.02/2,791.10
  6. Step 6: Final answer
    x = 3,110.76

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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.