Home / 7,945.28-11,919.18-2,751.56

Finding the Fourth Proportional to 7,945.28, 11,919.18 and 2,751.56

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Solution

The fourth proportional to 7,945.28, 11,919.18 and 2,751.56 is: 4,127.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.28 : 11,919.18 = 2,751.56 : x
  2. Step 2: Convert to fraction form
    7,945.28/11,919.18 = 2,751.56/x
  3. Step 3: Cross multiply
    7,945.28x = 11,919.18 × 2,751.56
  4. Step 4: Simplify right side
    7,945.28x = 32,796,338.92
  5. Step 5: Solve for x
    x = 32,796,338.92/7,945.28
  6. Step 6: Final answer
    x = 4,127.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.