Finding the Fourth Proportional to 3,876,072.63, 5,348,980.30 and 2,157,599.11
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Solution
The fourth proportional to 3,876,072.63, 5,348,980.30 and 2,157,599.11 is: 2,977,486.80
Step by Step Solution
- Step 1: Write the proportion equation
3,876,072.63 : 5,348,980.30 = 2,157,599.11 : x - Step 2: Convert to fraction form
3,876,072.63/5,348,980.30 = 2,157,599.11/x - Step 3: Cross multiply
3,876,072.63x = 5,348,980.30 × 2,157,599.11 - Step 4: Simplify right side
3,876,072.63x = 11,540,955,107,942.63 - Step 5: Solve for x
x = 11,540,955,107,942.63/3,876,072.63 - Step 6: Final answer
x = 2,977,486.80
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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.