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Finding the Third Proportional to 3,820 and 6,618

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Solution

The third proportional to 3,820 and 6,618 is: 11,465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820 : 6,618 = 6,618 : x
  2. Step 2: Convert to fraction form
    3,820/6,618 = 6,618/x
  3. Step 3: Cross multiply
    3,820x = 6,618 × 6,618
  4. Step 4: Simplify right side
    3,820x = 43,797,924
  5. Step 5: Solve for x
    x = 43,797,924/3,820
  6. Step 6: Final answer
    x = 11,465.43

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Why These Related Problems?

These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.