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Finding the Third Proportional to 3,107 and 4,689.50

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Solution

The third proportional to 3,107 and 4,689.50 is: 7,078.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107 : 4,689.50 = 4,689.50 : x
  2. Step 2: Convert to fraction form
    3,107/4,689.50 = 4,689.50/x
  3. Step 3: Cross multiply
    3,107x = 4,689.50 × 4,689.50
  4. Step 4: Simplify right side
    3,107x = 21,991,410.25
  5. Step 5: Solve for x
    x = 21,991,410.25/3,107
  6. Step 6: Final answer
    x = 7,078.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.