Finding the Fourth Proportional to 7,764.96, 11,639.07 and 3,811.62
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Solution
The fourth proportional to 7,764.96, 11,639.07 and 3,811.62 is: 5,713.32
Step by Step Solution
- Step 1: Write the proportion equation
7,764.96 : 11,639.07 = 3,811.62 : x - Step 2: Convert to fraction form
7,764.96/11,639.07 = 3,811.62/x - Step 3: Cross multiply
7,764.96x = 11,639.07 × 3,811.62 - Step 4: Simplify right side
7,764.96x = 44,363,711.99 - Step 5: Solve for x
x = 44,363,711.99/7,764.96 - Step 6: Final answer
x = 5,713.32
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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.