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Finding the Third Proportional to 1,431.75 and 2,043.75

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Solution

The third proportional to 1,431.75 and 2,043.75 is: 2,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.75 : 2,043.75 = 2,043.75 : x
  2. Step 2: Convert to fraction form
    1,431.75/2,043.75 = 2,043.75/x
  3. Step 3: Cross multiply
    1,431.75x = 2,043.75 × 2,043.75
  4. Step 4: Simplify right side
    1,431.75x = 4,176,914.06
  5. Step 5: Solve for x
    x = 4,176,914.06/1,431.75
  6. Step 6: Final answer
    x = 2,917.35

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.