Finding the Third Proportional to 396 and 1,040
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Solution
The third proportional to 396 and 1,040 is: 2,731.31
Step by Step Solution
- Step 1: Write the proportion equation
396 : 1,040 = 1,040 : x - Step 2: Convert to fraction form
396/1,040 = 1,040/x - Step 3: Cross multiply
396x = 1,040 × 1,040 - Step 4: Simplify right side
396x = 1,081,600 - Step 5: Solve for x
x = 1,081,600/396 - Step 6: Final answer
x = 2,731.31
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These problems maintain the same ratio (2.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.