Home / 7,945.66-11,921.76-2,755.18

Finding the Fourth Proportional to 7,945.66, 11,921.76 and 2,755.18

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Solution

The fourth proportional to 7,945.66, 11,921.76 and 2,755.18 is: 4,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.66 : 11,921.76 = 2,755.18 : x
  2. Step 2: Convert to fraction form
    7,945.66/11,921.76 = 2,755.18/x
  3. Step 3: Cross multiply
    7,945.66x = 11,921.76 × 2,755.18
  4. Step 4: Simplify right side
    7,945.66x = 32,846,594.72
  5. Step 5: Solve for x
    x = 32,846,594.72/7,945.66
  6. Step 6: Final answer
    x = 4,133.90

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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.