Home / 8,119.20-11,199.36-5,134.08

Finding the Fourth Proportional to 8,119.20, 11,199.36 and 5,134.08

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Solution

The fourth proportional to 8,119.20, 11,199.36 and 5,134.08 is: 7,081.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.20 : 11,199.36 = 5,134.08 : x
  2. Step 2: Convert to fraction form
    8,119.20/11,199.36 = 5,134.08/x
  3. Step 3: Cross multiply
    8,119.20x = 11,199.36 × 5,134.08
  4. Step 4: Simplify right side
    8,119.20x = 57,498,410.19
  5. Step 5: Solve for x
    x = 57,498,410.19/8,119.20
  6. Step 6: Final answer
    x = 7,081.78

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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.