Home / 2,979.70-4,469.61-1,131.68

Finding the Fourth Proportional to 2,979.70, 4,469.61 and 1,131.68

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Solution

The fourth proportional to 2,979.70, 4,469.61 and 1,131.68 is: 1,697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.70 : 4,469.61 = 1,131.68 : x
  2. Step 2: Convert to fraction form
    2,979.70/4,469.61 = 1,131.68/x
  3. Step 3: Cross multiply
    2,979.70x = 4,469.61 × 1,131.68
  4. Step 4: Simplify right side
    2,979.70x = 5,058,168.24
  5. Step 5: Solve for x
    x = 5,058,168.24/2,979.70
  6. Step 6: Final answer
    x = 1,697.54

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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.