Home / 3,985.11-5,979.56-1,646.73

Finding the Fourth Proportional to 3,985.11, 5,979.56 and 1,646.73

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Solution

The fourth proportional to 3,985.11, 5,979.56 and 1,646.73 is: 2,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.11 : 5,979.56 = 1,646.73 : x
  2. Step 2: Convert to fraction form
    3,985.11/5,979.56 = 1,646.73/x
  3. Step 3: Cross multiply
    3,985.11x = 5,979.56 × 1,646.73
  4. Step 4: Simplify right side
    3,985.11x = 9,846,712.61
  5. Step 5: Solve for x
    x = 9,846,712.61/3,985.11
  6. Step 6: Final answer
    x = 2,470.88

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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.