Home / 3,921.32-5,881.44-1,455.76

Finding the Fourth Proportional to 3,921.32, 5,881.44 and 1,455.76

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Solution

The fourth proportional to 3,921.32, 5,881.44 and 1,455.76 is: 2,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.32 : 5,881.44 = 1,455.76 : x
  2. Step 2: Convert to fraction form
    3,921.32/5,881.44 = 1,455.76/x
  3. Step 3: Cross multiply
    3,921.32x = 5,881.44 × 1,455.76
  4. Step 4: Simplify right side
    3,921.32x = 8,561,965.09
  5. Step 5: Solve for x
    x = 8,561,965.09/3,921.32
  6. Step 6: Final answer
    x = 2,183.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.