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Finding the Third Proportional to 1,720.69 and 2,740.22

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Solution

The third proportional to 1,720.69 and 2,740.22 is: 4,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.69 : 2,740.22 = 2,740.22 : x
  2. Step 2: Convert to fraction form
    1,720.69/2,740.22 = 2,740.22/x
  3. Step 3: Cross multiply
    1,720.69x = 2,740.22 × 2,740.22
  4. Step 4: Simplify right side
    1,720.69x = 7,508,798.80
  5. Step 5: Solve for x
    x = 7,508,798.80/1,720.69
  6. Step 6: Final answer
    x = 4,363.84

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.