Home / 2,979.27-4,469.43-1,005.09

Finding the Fourth Proportional to 2,979.27, 4,469.43 and 1,005.09

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Solution

The fourth proportional to 2,979.27, 4,469.43 and 1,005.09 is: 1,507.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.27 : 4,469.43 = 1,005.09 : x
  2. Step 2: Convert to fraction form
    2,979.27/4,469.43 = 1,005.09/x
  3. Step 3: Cross multiply
    2,979.27x = 4,469.43 × 1,005.09
  4. Step 4: Simplify right side
    2,979.27x = 4,492,179.40
  5. Step 5: Solve for x
    x = 4,492,179.40/2,979.27
  6. Step 6: Final answer
    x = 1,507.81

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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.