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Finding the Third Proportional to 1,698.19 and 3,790.69

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Solution

The third proportional to 1,698.19 and 3,790.69 is: 8,461.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.19 : 3,790.69 = 3,790.69 : x
  2. Step 2: Convert to fraction form
    1,698.19/3,790.69 = 3,790.69/x
  3. Step 3: Cross multiply
    1,698.19x = 3,790.69 × 3,790.69
  4. Step 4: Simplify right side
    1,698.19x = 14,369,311.72
  5. Step 5: Solve for x
    x = 14,369,311.72/1,698.19
  6. Step 6: Final answer
    x = 8,461.56

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.