Finding the Fourth Proportional to 7,794.40, 11,687.28 and 6,872.08
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Solution
The fourth proportional to 7,794.40, 11,687.28 and 6,872.08 is: 10,304.31
Step by Step Solution
- Step 1: Write the proportion equation
7,794.40 : 11,687.28 = 6,872.08 : x - Step 2: Convert to fraction form
7,794.40/11,687.28 = 6,872.08/x - Step 3: Cross multiply
7,794.40x = 11,687.28 × 6,872.08 - Step 4: Simplify right side
7,794.40x = 80,315,923.14 - Step 5: Solve for x
x = 80,315,923.14/7,794.40 - Step 6: Final answer
x = 10,304.31
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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.