Finding the Fourth Proportional to 7,930.18, 11,879.11 and 3,757.54
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Solution
The fourth proportional to 7,930.18, 11,879.11 and 3,757.54 is: 5,628.65
Step by Step Solution
- Step 1: Write the proportion equation
7,930.18 : 11,879.11 = 3,757.54 : x - Step 2: Convert to fraction form
7,930.18/11,879.11 = 3,757.54/x - Step 3: Cross multiply
7,930.18x = 11,879.11 × 3,757.54 - Step 4: Simplify right side
7,930.18x = 44,636,230.99 - Step 5: Solve for x
x = 44,636,230.99/7,930.18 - Step 6: Final answer
x = 5,628.65
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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.