Finding the Fourth Proportional to 2,889,743.63, 3,990,526.79 and 2,163,330.05
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Solution
The fourth proportional to 2,889,743.63, 3,990,526.79 and 2,163,330.05 is: 2,987,402.21
Step by Step Solution
- Step 1: Write the proportion equation
2,889,743.63 : 3,990,526.79 = 2,163,330.05 : x - Step 2: Convert to fraction form
2,889,743.63/3,990,526.79 = 2,163,330.05/x - Step 3: Cross multiply
2,889,743.63x = 3,990,526.79 × 2,163,330.05 - Step 4: Simplify right side
2,889,743.63x = 8,632,826,489,367.76 - Step 5: Solve for x
x = 8,632,826,489,367.76/2,889,743.63 - Step 6: Final answer
x = 2,987,402.21
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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.