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Finding the Third Proportional to 871.13 and 1,862.06

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Solution

The third proportional to 871.13 and 1,862.06 is: 3,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    871.13 : 1,862.06 = 1,862.06 : x
  2. Step 2: Convert to fraction form
    871.13/1,862.06 = 1,862.06/x
  3. Step 3: Cross multiply
    871.13x = 1,862.06 × 1,862.06
  4. Step 4: Simplify right side
    871.13x = 3,467,276.75
  5. Step 5: Solve for x
    x = 3,467,276.75/871.13
  6. Step 6: Final answer
    x = 3,980.23

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.