Finding the Third Proportional to 2,638 and 3,937
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Solution
The third proportional to 2,638 and 3,937 is: 5,875.65
Step by Step Solution
- Step 1: Write the proportion equation
2,638 : 3,937 = 3,937 : x - Step 2: Convert to fraction form
2,638/3,937 = 3,937/x - Step 3: Cross multiply
2,638x = 3,937 × 3,937 - Step 4: Simplify right side
2,638x = 15,499,969 - Step 5: Solve for x
x = 15,499,969/2,638 - Step 6: Final answer
x = 5,875.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.