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Finding the Third Proportional to 3,430 and 4,515

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Solution

The third proportional to 3,430 and 4,515 is: 5,943.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430 : 4,515 = 4,515 : x
  2. Step 2: Convert to fraction form
    3,430/4,515 = 4,515/x
  3. Step 3: Cross multiply
    3,430x = 4,515 × 4,515
  4. Step 4: Simplify right side
    3,430x = 20,385,225
  5. Step 5: Solve for x
    x = 20,385,225/3,430
  6. Step 6: Final answer
    x = 5,943.21

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.