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Finding the Third Proportional to 797.34 and 1,689.61

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Solution

The third proportional to 797.34 and 1,689.61 is: 3,580.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.34 : 1,689.61 = 1,689.61 : x
  2. Step 2: Convert to fraction form
    797.34/1,689.61 = 1,689.61/x
  3. Step 3: Cross multiply
    797.34x = 1,689.61 × 1,689.61
  4. Step 4: Simplify right side
    797.34x = 2,854,779.84
  5. Step 5: Solve for x
    x = 2,854,779.84/797.34
  6. Step 6: Final answer
    x = 3,580.36

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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.