Finding the Third Proportional to 520 and 1,261
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Solution
The third proportional to 520 and 1,261 is: 3,057.93
Step by Step Solution
- Step 1: Write the proportion equation
520 : 1,261 = 1,261 : x - Step 2: Convert to fraction form
520/1,261 = 1,261/x - Step 3: Cross multiply
520x = 1,261 × 1,261 - Step 4: Simplify right side
520x = 1,590,121 - Step 5: Solve for x
x = 1,590,121/520 - Step 6: Final answer
x = 3,057.93
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Why These Related Problems?
These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.