Finding the Third Proportional to 2,689 and 3,894
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Solution
The third proportional to 2,689 and 3,894 is: 5,638.99
Step by Step Solution
- Step 1: Write the proportion equation
2,689 : 3,894 = 3,894 : x - Step 2: Convert to fraction form
2,689/3,894 = 3,894/x - Step 3: Cross multiply
2,689x = 3,894 × 3,894 - Step 4: Simplify right side
2,689x = 15,163,236 - Step 5: Solve for x
x = 15,163,236/2,689 - Step 6: Final answer
x = 5,638.99
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These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.