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Finding the Third Proportional to 4,306 and 4,720

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Solution

The third proportional to 4,306 and 4,720 is: 5,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,306 : 4,720 = 4,720 : x
  2. Step 2: Convert to fraction form
    4,306/4,720 = 4,720/x
  3. Step 3: Cross multiply
    4,306x = 4,720 × 4,720
  4. Step 4: Simplify right side
    4,306x = 22,278,400
  5. Step 5: Solve for x
    x = 22,278,400/4,306
  6. Step 6: Final answer
    x = 5,173.80

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.