Finding the Fourth Proportional to 3,830,913.57, 5,286,421.57 and 2,112,034.08
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Solution
The fourth proportional to 3,830,913.57, 5,286,421.57 and 2,112,034.08 is: 2,914,475.18
Step by Step Solution
- Step 1: Write the proportion equation
3,830,913.57 : 5,286,421.57 = 2,112,034.08 : x - Step 2: Convert to fraction form
3,830,913.57/5,286,421.57 = 2,112,034.08/x - Step 3: Cross multiply
3,830,913.57x = 5,286,421.57 × 2,112,034.08 - Step 4: Simplify right side
3,830,913.57x = 11,165,102,517,087.11 - Step 5: Solve for x
x = 11,165,102,517,087.11/3,830,913.57 - Step 6: Final answer
x = 2,914,475.18
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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.