Finding the Fourth Proportional to 2,891,423.18, 3,990,187.61 and 1,602,285.09
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Solution
The fourth proportional to 2,891,423.18, 3,990,187.61 and 1,602,285.09 is: 2,211,166.51
Step by Step Solution
- Step 1: Write the proportion equation
2,891,423.18 : 3,990,187.61 = 1,602,285.09 : x - Step 2: Convert to fraction form
2,891,423.18/3,990,187.61 = 1,602,285.09/x - Step 3: Cross multiply
2,891,423.18x = 3,990,187.61 × 1,602,285.09 - Step 4: Simplify right side
2,891,423.18x = 6,393,418,105,794.31 - Step 5: Solve for x
x = 6,393,418,105,794.31/2,891,423.18 - Step 6: Final answer
x = 2,211,166.51
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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.