Home / 3,945.88-5,445.18-2,177.32

Finding the Fourth Proportional to 3,945.88, 5,445.18 and 2,177.32

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Solution

The fourth proportional to 3,945.88, 5,445.18 and 2,177.32 is: 3,004.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.88 : 5,445.18 = 2,177.32 : x
  2. Step 2: Convert to fraction form
    3,945.88/5,445.18 = 2,177.32/x
  3. Step 3: Cross multiply
    3,945.88x = 5,445.18 × 2,177.32
  4. Step 4: Simplify right side
    3,945.88x = 11,855,899.32
  5. Step 5: Solve for x
    x = 11,855,899.32/3,945.88
  6. Step 6: Final answer
    x = 3,004.63

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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.