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Finding the Fourth Proportional to 5,221, 7,204.98 and 2,863.15

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Solution

The fourth proportional to 5,221, 7,204.98 and 2,863.15 is: 3,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221 : 7,204.98 = 2,863.15 : x
  2. Step 2: Convert to fraction form
    5,221/7,204.98 = 2,863.15/x
  3. Step 3: Cross multiply
    5,221x = 7,204.98 × 2,863.15
  4. Step 4: Simplify right side
    5,221x = 20,628,938.49
  5. Step 5: Solve for x
    x = 20,628,938.49/5,221
  6. Step 6: Final answer
    x = 3,951.15

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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.