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Finding the Third Proportional to 3,720 and 5,570

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Solution

The third proportional to 3,720 and 5,570 is: 8,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720 : 5,570 = 5,570 : x
  2. Step 2: Convert to fraction form
    3,720/5,570 = 5,570/x
  3. Step 3: Cross multiply
    3,720x = 5,570 × 5,570
  4. Step 4: Simplify right side
    3,720x = 31,024,900
  5. Step 5: Solve for x
    x = 31,024,900/3,720
  6. Step 6: Final answer
    x = 8,340.03

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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.