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Finding the Third Proportional to 5,828 and 7,220

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Solution

The third proportional to 5,828 and 7,220 is: 8,944.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,828 : 7,220 = 7,220 : x
  2. Step 2: Convert to fraction form
    5,828/7,220 = 7,220/x
  3. Step 3: Cross multiply
    5,828x = 7,220 × 7,220
  4. Step 4: Simplify right side
    5,828x = 52,128,400
  5. Step 5: Solve for x
    x = 52,128,400/5,828
  6. Step 6: Final answer
    x = 8,944.47

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Why These Related Problems?

These problems maintain the same ratio (1.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.