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Finding the Third Proportional to 4,650 and 7,690.50

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Solution

The third proportional to 4,650 and 7,690.50 is: 12,719.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,650 : 7,690.50 = 7,690.50 : x
  2. Step 2: Convert to fraction form
    4,650/7,690.50 = 7,690.50/x
  3. Step 3: Cross multiply
    4,650x = 7,690.50 × 7,690.50
  4. Step 4: Simplify right side
    4,650x = 59,143,790.25
  5. Step 5: Solve for x
    x = 59,143,790.25/4,650
  6. Step 6: Final answer
    x = 12,719.09

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.