Finding the Fourth Proportional to 2,112.11, 3,168.62 and 651.23
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Solution
The fourth proportional to 2,112.11, 3,168.62 and 651.23 is: 976.99
Step by Step Solution
- Step 1: Write the proportion equation
2,112.11 : 3,168.62 = 651.23 : x - Step 2: Convert to fraction form
2,112.11/3,168.62 = 651.23/x - Step 3: Cross multiply
2,112.11x = 3,168.62 × 651.23 - Step 4: Simplify right side
2,112.11x = 2,063,500.40 - Step 5: Solve for x
x = 2,063,500.40/2,112.11 - Step 6: Final answer
x = 976.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.