Finding the Third Proportional to 1,378 and 3,218
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Solution
The third proportional to 1,378 and 3,218 is: 7,514.89
Step by Step Solution
- Step 1: Write the proportion equation
1,378 : 3,218 = 3,218 : x - Step 2: Convert to fraction form
1,378/3,218 = 3,218/x - Step 3: Cross multiply
1,378x = 3,218 × 3,218 - Step 4: Simplify right side
1,378x = 10,355,524 - Step 5: Solve for x
x = 10,355,524/1,378 - Step 6: Final answer
x = 7,514.89
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These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.