Home / 2,861.11-3,949.10-1,682.56

Finding the Fourth Proportional to 2,861.11, 3,949.10 and 1,682.56

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Solution

The fourth proportional to 2,861.11, 3,949.10 and 1,682.56 is: 2,322.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.11 : 3,949.10 = 1,682.56 : x
  2. Step 2: Convert to fraction form
    2,861.11/3,949.10 = 1,682.56/x
  3. Step 3: Cross multiply
    2,861.11x = 3,949.10 × 1,682.56
  4. Step 4: Simplify right side
    2,861.11x = 6,644,597.70
  5. Step 5: Solve for x
    x = 6,644,597.70/2,861.11
  6. Step 6: Final answer
    x = 2,322.38

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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.