Finding the Fourth Proportional to 3,879,352.79, 5,353,672.93 and 2,160,473.31
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Solution
The fourth proportional to 3,879,352.79, 5,353,672.93 and 2,160,473.31 is: 2,981,545.66
Step by Step Solution
- Step 1: Write the proportion equation
3,879,352.79 : 5,353,672.93 = 2,160,473.31 : x - Step 2: Convert to fraction form
3,879,352.79/5,353,672.93 = 2,160,473.31/x - Step 3: Cross multiply
3,879,352.79x = 5,353,672.93 × 2,160,473.31 - Step 4: Simplify right side
3,879,352.79x = 11,566,467,470,333.32 - Step 5: Solve for x
x = 11,566,467,470,333.32/3,879,352.79 - Step 6: Final answer
x = 2,981,545.66
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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.