Home / 3,945.94-5,445.36-2,177.54

Finding the Fourth Proportional to 3,945.94, 5,445.36 and 2,177.54

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Solution

The fourth proportional to 3,945.94, 5,445.36 and 2,177.54 is: 3,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.94 : 5,445.36 = 2,177.54 : x
  2. Step 2: Convert to fraction form
    3,945.94/5,445.36 = 2,177.54/x
  3. Step 3: Cross multiply
    3,945.94x = 5,445.36 × 2,177.54
  4. Step 4: Simplify right side
    3,945.94x = 11,857,489.21
  5. Step 5: Solve for x
    x = 11,857,489.21/3,945.94
  6. Step 6: Final answer
    x = 3,004.98

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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.