Finding the Third Proportional to 1,806 and 3,930
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Solution
The third proportional to 1,806 and 3,930 is: 8,551.99
Step by Step Solution
- Step 1: Write the proportion equation
1,806 : 3,930 = 3,930 : x - Step 2: Convert to fraction form
1,806/3,930 = 3,930/x - Step 3: Cross multiply
1,806x = 3,930 × 3,930 - Step 4: Simplify right side
1,806x = 15,444,900 - Step 5: Solve for x
x = 15,444,900/1,806 - Step 6: Final answer
x = 8,551.99
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These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.