Home / 3,945.20-5,444.70-2,176.96

Finding the Fourth Proportional to 3,945.20, 5,444.70 and 2,176.96

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Solution

The fourth proportional to 3,945.20, 5,444.70 and 2,176.96 is: 3,004.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.20 : 5,444.70 = 2,176.96 : x
  2. Step 2: Convert to fraction form
    3,945.20/5,444.70 = 2,176.96/x
  3. Step 3: Cross multiply
    3,945.20x = 5,444.70 × 2,176.96
  4. Step 4: Simplify right side
    3,945.20x = 11,852,894.11
  5. Step 5: Solve for x
    x = 11,852,894.11/3,945.20
  6. Step 6: Final answer
    x = 3,004.38

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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.