Home / 5,105.22-7,043.96-2,979.54

Finding the Fourth Proportional to 5,105.22, 7,043.96 and 2,979.54

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Solution

The fourth proportional to 5,105.22, 7,043.96 and 2,979.54 is: 4,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.22 : 7,043.96 = 2,979.54 : x
  2. Step 2: Convert to fraction form
    5,105.22/7,043.96 = 2,979.54/x
  3. Step 3: Cross multiply
    5,105.22x = 7,043.96 × 2,979.54
  4. Step 4: Simplify right side
    5,105.22x = 20,987,772.98
  5. Step 5: Solve for x
    x = 20,987,772.98/5,105.22
  6. Step 6: Final answer
    x = 4,111.04

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1.5x scale

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.