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Finding the Third Proportional to 859.13 and 1,915.13

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Solution

The third proportional to 859.13 and 1,915.13 is: 4,269.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.13 : 1,915.13 = 1,915.13 : x
  2. Step 2: Convert to fraction form
    859.13/1,915.13 = 1,915.13/x
  3. Step 3: Cross multiply
    859.13x = 1,915.13 × 1,915.13
  4. Step 4: Simplify right side
    859.13x = 3,667,703.77
  5. Step 5: Solve for x
    x = 3,667,703.77/859.13
  6. Step 6: Final answer
    x = 4,269.12

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.