Home / 2,979.13-4,469.66-2,145.51

Finding the Fourth Proportional to 2,979.13, 4,469.66 and 2,145.51

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Solution

The fourth proportional to 2,979.13, 4,469.66 and 2,145.51 is: 3,218.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.13 : 4,469.66 = 2,145.51 : x
  2. Step 2: Convert to fraction form
    2,979.13/4,469.66 = 2,145.51/x
  3. Step 3: Cross multiply
    2,979.13x = 4,469.66 × 2,145.51
  4. Step 4: Simplify right side
    2,979.13x = 9,589,705.59
  5. Step 5: Solve for x
    x = 9,589,705.59/2,979.13
  6. Step 6: Final answer
    x = 3,218.96

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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.