Finding the Fourth Proportional to 7,668.64, 11,503.61 and 2,121.99
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Solution
The fourth proportional to 7,668.64, 11,503.61 and 2,121.99 is: 3,183.16
Step by Step Solution
- Step 1: Write the proportion equation
7,668.64 : 11,503.61 = 2,121.99 : x - Step 2: Convert to fraction form
7,668.64/11,503.61 = 2,121.99/x - Step 3: Cross multiply
7,668.64x = 11,503.61 × 2,121.99 - Step 4: Simplify right side
7,668.64x = 24,410,545.38 - Step 5: Solve for x
x = 24,410,545.38/7,668.64 - Step 6: Final answer
x = 3,183.16
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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.