Finding the Fourth Proportional to 2,638.75, 3,958.56 and 1,177.84
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Solution
The fourth proportional to 2,638.75, 3,958.56 and 1,177.84 is: 1,766.95
Step by Step Solution
- Step 1: Write the proportion equation
2,638.75 : 3,958.56 = 1,177.84 : x - Step 2: Convert to fraction form
2,638.75/3,958.56 = 1,177.84/x - Step 3: Cross multiply
2,638.75x = 3,958.56 × 1,177.84 - Step 4: Simplify right side
2,638.75x = 4,662,550.31 - Step 5: Solve for x
x = 4,662,550.31/2,638.75 - Step 6: Final answer
x = 1,766.95
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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.