Finding the Third Proportional to 3,128 and 5,200
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Solution
The third proportional to 3,128 and 5,200 is: 8,644.50
Step by Step Solution
- Step 1: Write the proportion equation
3,128 : 5,200 = 5,200 : x - Step 2: Convert to fraction form
3,128/5,200 = 5,200/x - Step 3: Cross multiply
3,128x = 5,200 × 5,200 - Step 4: Simplify right side
3,128x = 27,040,000 - Step 5: Solve for x
x = 27,040,000/3,128 - Step 6: Final answer
x = 8,644.50
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Why These Related Problems?
These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.