Finding the Fourth Proportional to 7,965.65, 11,946.42 and 3,286.99
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Solution
The fourth proportional to 7,965.65, 11,946.42 and 3,286.99 is: 4,929.63
Step by Step Solution
- Step 1: Write the proportion equation
7,965.65 : 11,946.42 = 3,286.99 : x - Step 2: Convert to fraction form
7,965.65/11,946.42 = 3,286.99/x - Step 3: Cross multiply
7,965.65x = 11,946.42 × 3,286.99 - Step 4: Simplify right side
7,965.65x = 39,267,739.37 - Step 5: Solve for x
x = 39,267,739.37/7,965.65 - Step 6: Final answer
x = 4,929.63
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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.