Finding the Fourth Proportional to 2,092.79, 3,138.72 and 612
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Solution
The fourth proportional to 2,092.79, 3,138.72 and 612 is: 917.87
Step by Step Solution
- Step 1: Write the proportion equation
2,092.79 : 3,138.72 = 612 : x - Step 2: Convert to fraction form
2,092.79/3,138.72 = 612/x - Step 3: Cross multiply
2,092.79x = 3,138.72 × 612 - Step 4: Simplify right side
2,092.79x = 1,920,896.64 - Step 5: Solve for x
x = 1,920,896.64/2,092.79 - Step 6: Final answer
x = 917.87
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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.