Finding the Third Proportional to 989 and 1,876
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Solution
The third proportional to 989 and 1,876 is: 3,558.52
Step by Step Solution
- Step 1: Write the proportion equation
989 : 1,876 = 1,876 : x - Step 2: Convert to fraction form
989/1,876 = 1,876/x - Step 3: Cross multiply
989x = 1,876 × 1,876 - Step 4: Simplify right side
989x = 3,519,376 - Step 5: Solve for x
x = 3,519,376/989 - Step 6: Final answer
x = 3,558.52
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Why These Related Problems?
These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.