Home / 5,218.32-7,199.84-2,979.38

Finding the Fourth Proportional to 5,218.32, 7,199.84 and 2,979.38

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Solution

The fourth proportional to 5,218.32, 7,199.84 and 2,979.38 is: 4,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.32 : 7,199.84 = 2,979.38 : x
  2. Step 2: Convert to fraction form
    5,218.32/7,199.84 = 2,979.38/x
  3. Step 3: Cross multiply
    5,218.32x = 7,199.84 × 2,979.38
  4. Step 4: Simplify right side
    5,218.32x = 21,451,059.30
  5. Step 5: Solve for x
    x = 21,451,059.30/5,218.32
  6. Step 6: Final answer
    x = 4,110.72

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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.