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Finding the Third Proportional to 4,820 and 9,964

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Solution

The third proportional to 4,820 and 9,964 is: 20,597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,820 : 9,964 = 9,964 : x
  2. Step 2: Convert to fraction form
    4,820/9,964 = 9,964/x
  3. Step 3: Cross multiply
    4,820x = 9,964 × 9,964
  4. Step 4: Simplify right side
    4,820x = 99,281,296
  5. Step 5: Solve for x
    x = 99,281,296/4,820
  6. Step 6: Final answer
    x = 20,597.78

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.