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Finding the Third Proportional to 1,710 and 2,679.19

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Solution

The third proportional to 1,710 and 2,679.19 is: 4,197.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,710 : 2,679.19 = 2,679.19 : x
  2. Step 2: Convert to fraction form
    1,710/2,679.19 = 2,679.19/x
  3. Step 3: Cross multiply
    1,710x = 2,679.19 × 2,679.19
  4. Step 4: Simplify right side
    1,710x = 7,178,045.66
  5. Step 5: Solve for x
    x = 7,178,045.66/1,710
  6. Step 6: Final answer
    x = 4,197.69

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.