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Finding the Third Proportional to 3,390 and 4,620

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Solution

The third proportional to 3,390 and 4,620 is: 6,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390 : 4,620 = 4,620 : x
  2. Step 2: Convert to fraction form
    3,390/4,620 = 4,620/x
  3. Step 3: Cross multiply
    3,390x = 4,620 × 4,620
  4. Step 4: Simplify right side
    3,390x = 21,344,400
  5. Step 5: Solve for x
    x = 21,344,400/3,390
  6. Step 6: Final answer
    x = 6,296.28

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.