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Finding the Fourth Proportional to 3,395.94, 4,686.26 and 1,979.68

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Solution

The fourth proportional to 3,395.94, 4,686.26 and 1,979.68 is: 2,731.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.94 : 4,686.26 = 1,979.68 : x
  2. Step 2: Convert to fraction form
    3,395.94/4,686.26 = 1,979.68/x
  3. Step 3: Cross multiply
    3,395.94x = 4,686.26 × 1,979.68
  4. Step 4: Simplify right side
    3,395.94x = 9,277,295.20
  5. Step 5: Solve for x
    x = 9,277,295.20/3,395.94
  6. Step 6: Final answer
    x = 2,731.88

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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.