Home / 3,932.64-5,428.56-2,605.86

Finding the Fourth Proportional to 3,932.64, 5,428.56 and 2,605.86

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Solution

The fourth proportional to 3,932.64, 5,428.56 and 2,605.86 is: 3,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.64 : 5,428.56 = 2,605.86 : x
  2. Step 2: Convert to fraction form
    3,932.64/5,428.56 = 2,605.86/x
  3. Step 3: Cross multiply
    3,932.64x = 5,428.56 × 2,605.86
  4. Step 4: Simplify right side
    3,932.64x = 14,146,067.36
  5. Step 5: Solve for x
    x = 14,146,067.36/3,932.64
  6. Step 6: Final answer
    x = 3,597.09

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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.