Home / 2,813.28-4,218.70-2,164.47

Finding the Fourth Proportional to 2,813.28, 4,218.70 and 2,164.47

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Solution

The fourth proportional to 2,813.28, 4,218.70 and 2,164.47 is: 3,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.28 : 4,218.70 = 2,164.47 : x
  2. Step 2: Convert to fraction form
    2,813.28/4,218.70 = 2,164.47/x
  3. Step 3: Cross multiply
    2,813.28x = 4,218.70 × 2,164.47
  4. Step 4: Simplify right side
    2,813.28x = 9,131,249.59
  5. Step 5: Solve for x
    x = 9,131,249.59/2,813.28
  6. Step 6: Final answer
    x = 3,245.77

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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.