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Finding the Third Proportional to 756.84 and 1,643.63

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Solution

The third proportional to 756.84 and 1,643.63 is: 3,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.84 : 1,643.63 = 1,643.63 : x
  2. Step 2: Convert to fraction form
    756.84/1,643.63 = 1,643.63/x
  3. Step 3: Cross multiply
    756.84x = 1,643.63 × 1,643.63
  4. Step 4: Simplify right side
    756.84x = 2,701,503.14
  5. Step 5: Solve for x
    x = 2,701,503.14/756.84
  6. Step 6: Final answer
    x = 3,569.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.