Home / 3,751.11-5,176.31-2,178.90

Finding the Fourth Proportional to 3,751.11, 5,176.31 and 2,178.90

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Solution

The fourth proportional to 3,751.11, 5,176.31 and 2,178.90 is: 3,006.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.11 : 5,176.31 = 2,178.90 : x
  2. Step 2: Convert to fraction form
    3,751.11/5,176.31 = 2,178.90/x
  3. Step 3: Cross multiply
    3,751.11x = 5,176.31 × 2,178.90
  4. Step 4: Simplify right side
    3,751.11x = 11,278,650.96
  5. Step 5: Solve for x
    x = 11,278,650.96/3,751.11
  6. Step 6: Final answer
    x = 3,006.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.