Finding the Third Proportional to 917 and 1,911
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Solution
The third proportional to 917 and 1,911 is: 3,982.47
Step by Step Solution
- Step 1: Write the proportion equation
917 : 1,911 = 1,911 : x - Step 2: Convert to fraction form
917/1,911 = 1,911/x - Step 3: Cross multiply
917x = 1,911 × 1,911 - Step 4: Simplify right side
917x = 3,651,921 - Step 5: Solve for x
x = 3,651,921/917 - Step 6: Final answer
x = 3,982.47
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Why These Related Problems?
These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.