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Finding the Third Proportional to 1,983 and 3,107.50

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Solution

The third proportional to 1,983 and 3,107.50 is: 4,869.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983 : 3,107.50 = 3,107.50 : x
  2. Step 2: Convert to fraction form
    1,983/3,107.50 = 3,107.50/x
  3. Step 3: Cross multiply
    1,983x = 3,107.50 × 3,107.50
  4. Step 4: Simplify right side
    1,983x = 9,656,556.25
  5. Step 5: Solve for x
    x = 9,656,556.25/1,983
  6. Step 6: Final answer
    x = 4,869.67

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.