Home / 5,811.24-8,716.86-2,112.78

Finding the Fourth Proportional to 5,811.24, 8,716.86 and 2,112.78

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Solution

The fourth proportional to 5,811.24, 8,716.86 and 2,112.78 is: 3,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.24 : 8,716.86 = 2,112.78 : x
  2. Step 2: Convert to fraction form
    5,811.24/8,716.86 = 2,112.78/x
  3. Step 3: Cross multiply
    5,811.24x = 8,716.86 × 2,112.78
  4. Step 4: Simplify right side
    5,811.24x = 18,416,807.47
  5. Step 5: Solve for x
    x = 18,416,807.47/5,811.24
  6. Step 6: Final answer
    x = 3,169.17

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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.