Finding the Third Proportional to 1,121.13 and 1,371.09
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Solution
The third proportional to 1,121.13 and 1,371.09 is: 1,676.78
Step by Step Solution
- Step 1: Write the proportion equation
1,121.13 : 1,371.09 = 1,371.09 : x - Step 2: Convert to fraction form
1,121.13/1,371.09 = 1,371.09/x - Step 3: Cross multiply
1,121.13x = 1,371.09 × 1,371.09 - Step 4: Simplify right side
1,121.13x = 1,879,898.07 - Step 5: Solve for x
x = 1,879,898.07/1,121.13 - Step 6: Final answer
x = 1,676.78
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These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.