Home / 3,945.18-5,443.92-2,176.77

Finding the Fourth Proportional to 3,945.18, 5,443.92 and 2,176.77

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Solution

The fourth proportional to 3,945.18, 5,443.92 and 2,176.77 is: 3,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.18 : 5,443.92 = 2,176.77 : x
  2. Step 2: Convert to fraction form
    3,945.18/5,443.92 = 2,176.77/x
  3. Step 3: Cross multiply
    3,945.18x = 5,443.92 × 2,176.77
  4. Step 4: Simplify right side
    3,945.18x = 11,850,161.74
  5. Step 5: Solve for x
    x = 11,850,161.74/3,945.18
  6. Step 6: Final answer
    x = 3,003.71

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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.