Finding the Fourth Proportional to 7,687.80, 11,524.41 and 7,002.99
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Solution
The fourth proportional to 7,687.80, 11,524.41 and 7,002.99 is: 10,497.84
Step by Step Solution
- Step 1: Write the proportion equation
7,687.80 : 11,524.41 = 7,002.99 : x - Step 2: Convert to fraction form
7,687.80/11,524.41 = 7,002.99/x - Step 3: Cross multiply
7,687.80x = 11,524.41 × 7,002.99 - Step 4: Simplify right side
7,687.80x = 80,705,327.99 - Step 5: Solve for x
x = 80,705,327.99/7,687.80 - Step 6: Final answer
x = 10,497.84
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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.