Home / 2,151.11-2,949.20-2,112.23

Finding the Fourth Proportional to 2,151.11, 2,949.20 and 2,112.23

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Solution

The fourth proportional to 2,151.11, 2,949.20 and 2,112.23 is: 2,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.11 : 2,949.20 = 2,112.23 : x
  2. Step 2: Convert to fraction form
    2,151.11/2,949.20 = 2,112.23/x
  3. Step 3: Cross multiply
    2,151.11x = 2,949.20 × 2,112.23
  4. Step 4: Simplify right side
    2,151.11x = 6,229,388.72
  5. Step 5: Solve for x
    x = 6,229,388.72/2,151.11
  6. Step 6: Final answer
    x = 2,895.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.