Finding the Fourth Proportional to 7,939.91, 11,911.42 and 2,392.99
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Solution
The fourth proportional to 7,939.91, 11,911.42 and 2,392.99 is: 3,589.95
Step by Step Solution
- Step 1: Write the proportion equation
7,939.91 : 11,911.42 = 2,392.99 : x - Step 2: Convert to fraction form
7,939.91/11,911.42 = 2,392.99/x - Step 3: Cross multiply
7,939.91x = 11,911.42 × 2,392.99 - Step 4: Simplify right side
7,939.91x = 28,503,873.18 - Step 5: Solve for x
x = 28,503,873.18/7,939.91 - Step 6: Final answer
x = 3,589.95
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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.