Finding the Fourth Proportional to 11,857.10, 17,785.64 and 3,091.99
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Solution
The fourth proportional to 11,857.10, 17,785.64 and 3,091.99 is: 4,637.98
Step by Step Solution
- Step 1: Write the proportion equation
11,857.10 : 17,785.64 = 3,091.99 : x - Step 2: Convert to fraction form
11,857.10/17,785.64 = 3,091.99/x - Step 3: Cross multiply
11,857.10x = 17,785.64 × 3,091.99 - Step 4: Simplify right side
11,857.10x = 54,992,932.10 - Step 5: Solve for x
x = 54,992,932.10/11,857.10 - Step 6: Final answer
x = 4,637.98
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1.5x scale
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.