Home / 3,942.24-5,440.67-2,945.79

Finding the Fourth Proportional to 3,942.24, 5,440.67 and 2,945.79

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Solution

The fourth proportional to 3,942.24, 5,440.67 and 2,945.79 is: 4,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.24 : 5,440.67 = 2,945.79 : x
  2. Step 2: Convert to fraction form
    3,942.24/5,440.67 = 2,945.79/x
  3. Step 3: Cross multiply
    3,942.24x = 5,440.67 × 2,945.79
  4. Step 4: Simplify right side
    3,942.24x = 16,027,044.08
  5. Step 5: Solve for x
    x = 16,027,044.08/3,942.24
  6. Step 6: Final answer
    x = 4,065.47

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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.