Finding the Fourth Proportional to 8,471.79, 11,691.09 and 4,694.99
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Solution
The fourth proportional to 8,471.79, 11,691.09 and 4,694.99 is: 6,479.09
Step by Step Solution
- Step 1: Write the proportion equation
8,471.79 : 11,691.09 = 4,694.99 : x - Step 2: Convert to fraction form
8,471.79/11,691.09 = 4,694.99/x - Step 3: Cross multiply
8,471.79x = 11,691.09 × 4,694.99 - Step 4: Simplify right side
8,471.79x = 54,889,492.18 - Step 5: Solve for x
x = 54,889,492.18/8,471.79 - Step 6: Final answer
x = 6,479.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.