Finding the Fourth Proportional to 2,112.20, 3,168.49 and 552.18
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Solution
The fourth proportional to 2,112.20, 3,168.49 and 552.18 is: 828.32
Step by Step Solution
- Step 1: Write the proportion equation
2,112.20 : 3,168.49 = 552.18 : x - Step 2: Convert to fraction form
2,112.20/3,168.49 = 552.18/x - Step 3: Cross multiply
2,112.20x = 3,168.49 × 552.18 - Step 4: Simplify right side
2,112.20x = 1,749,576.53 - Step 5: Solve for x
x = 1,749,576.53/2,112.20 - Step 6: Final answer
x = 828.32
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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.