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Finding the Third Proportional to 919.50 and 1,975.50

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Solution

The third proportional to 919.50 and 1,975.50 is: 4,244.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    919.50 : 1,975.50 = 1,975.50 : x
  2. Step 2: Convert to fraction form
    919.50/1,975.50 = 1,975.50/x
  3. Step 3: Cross multiply
    919.50x = 1,975.50 × 1,975.50
  4. Step 4: Simplify right side
    919.50x = 3,902,600.25
  5. Step 5: Solve for x
    x = 3,902,600.25/919.50
  6. Step 6: Final answer
    x = 4,244.26

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.