Home / 5,128.14-7,694.64-2,207.28

Finding the Fourth Proportional to 5,128.14, 7,694.64 and 2,207.28

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Solution

The fourth proportional to 5,128.14, 7,694.64 and 2,207.28 is: 3,311.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.14 : 7,694.64 = 2,207.28 : x
  2. Step 2: Convert to fraction form
    5,128.14/7,694.64 = 2,207.28/x
  3. Step 3: Cross multiply
    5,128.14x = 7,694.64 × 2,207.28
  4. Step 4: Simplify right side
    5,128.14x = 16,984,224.98
  5. Step 5: Solve for x
    x = 16,984,224.98/5,128.14
  6. Step 6: Final answer
    x = 3,311.97

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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.