Home / 5,217.92-7,200.90-2,979.75

Finding the Fourth Proportional to 5,217.92, 7,200.90 and 2,979.75

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Solution

The fourth proportional to 5,217.92, 7,200.90 and 2,979.75 is: 4,112.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.92 : 7,200.90 = 2,979.75 : x
  2. Step 2: Convert to fraction form
    5,217.92/7,200.90 = 2,979.75/x
  3. Step 3: Cross multiply
    5,217.92x = 7,200.90 × 2,979.75
  4. Step 4: Simplify right side
    5,217.92x = 21,456,908.78
  5. Step 5: Solve for x
    x = 21,456,908.78/5,217.92
  6. Step 6: Final answer
    x = 4,112.16

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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.