Finding the Fourth Proportional to 2,889,675.96, 3,990,433.31 and 2,163,262.55
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Solution
The fourth proportional to 2,889,675.96, 3,990,433.31 and 2,163,262.55 is: 2,987,308.97
Step by Step Solution
- Step 1: Write the proportion equation
2,889,675.96 : 3,990,433.31 = 2,163,262.55 : x - Step 2: Convert to fraction form
2,889,675.96/3,990,433.31 = 2,163,262.55/x - Step 3: Cross multiply
2,889,675.96x = 3,990,433.31 × 2,163,262.55 - Step 4: Simplify right side
2,889,675.96x = 8,632,354,915,139.30 - Step 5: Solve for x
x = 8,632,354,915,139.30/2,889,675.96 - Step 6: Final answer
x = 2,987,308.97
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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.