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Finding the Third Proportional to 1,618 and 3,434

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Solution

The third proportional to 1,618 and 3,434 is: 7,288.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618 : 3,434 = 3,434 : x
  2. Step 2: Convert to fraction form
    1,618/3,434 = 3,434/x
  3. Step 3: Cross multiply
    1,618x = 3,434 × 3,434
  4. Step 4: Simplify right side
    1,618x = 11,792,356
  5. Step 5: Solve for x
    x = 11,792,356/1,618
  6. Step 6: Final answer
    x = 7,288.23

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.