Finding the Fourth Proportional to 7,987.14, 11,979.99 and 2,441.79
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Solution
The fourth proportional to 7,987.14, 11,979.99 and 2,441.79 is: 3,662.46
Step by Step Solution
- Step 1: Write the proportion equation
7,987.14 : 11,979.99 = 2,441.79 : x - Step 2: Convert to fraction form
7,987.14/11,979.99 = 2,441.79/x - Step 3: Cross multiply
7,987.14x = 11,979.99 × 2,441.79 - Step 4: Simplify right side
7,987.14x = 29,252,619.78 - Step 5: Solve for x
x = 29,252,619.78/7,987.14 - Step 6: Final answer
x = 3,662.46
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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.