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Finding the Third Proportional to 2,115.50 and 3,565

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Solution

The third proportional to 2,115.50 and 3,565 is: 6,007.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.50 : 3,565 = 3,565 : x
  2. Step 2: Convert to fraction form
    2,115.50/3,565 = 3,565/x
  3. Step 3: Cross multiply
    2,115.50x = 3,565 × 3,565
  4. Step 4: Simplify right side
    2,115.50x = 12,709,225
  5. Step 5: Solve for x
    x = 12,709,225/2,115.50
  6. Step 6: Final answer
    x = 6,007.67

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.