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Finding the Third Proportional to 5,159 and 7,760.50

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Solution

The third proportional to 5,159 and 7,760.50 is: 11,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159 : 7,760.50 = 7,760.50 : x
  2. Step 2: Convert to fraction form
    5,159/7,760.50 = 7,760.50/x
  3. Step 3: Cross multiply
    5,159x = 7,760.50 × 7,760.50
  4. Step 4: Simplify right side
    5,159x = 60,225,360.25
  5. Step 5: Solve for x
    x = 60,225,360.25/5,159
  6. Step 6: Final answer
    x = 11,673.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.