Home / 5,630.43-8,447.39-2,120.75

Finding the Fourth Proportional to 5,630.43, 8,447.39 and 2,120.75

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Solution

The fourth proportional to 5,630.43, 8,447.39 and 2,120.75 is: 3,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.43 : 8,447.39 = 2,120.75 : x
  2. Step 2: Convert to fraction form
    5,630.43/8,447.39 = 2,120.75/x
  3. Step 3: Cross multiply
    5,630.43x = 8,447.39 × 2,120.75
  4. Step 4: Simplify right side
    5,630.43x = 17,914,802.34
  5. Step 5: Solve for x
    x = 17,914,802.34/5,630.43
  6. Step 6: Final answer
    x = 3,181.78

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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.