Finding the Third Proportional to 1,990 and 3,250
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Solution
The third proportional to 1,990 and 3,250 is: 5,307.79
Step by Step Solution
- Step 1: Write the proportion equation
1,990 : 3,250 = 3,250 : x - Step 2: Convert to fraction form
1,990/3,250 = 3,250/x - Step 3: Cross multiply
1,990x = 3,250 × 3,250 - Step 4: Simplify right side
1,990x = 10,562,500 - Step 5: Solve for x
x = 10,562,500/1,990 - Step 6: Final answer
x = 5,307.79
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Why These Related Problems?
These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.