Finding the Fourth Proportional to 3,870,740.64, 5,341,804.36 and 2,151,889.84
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Solution
The fourth proportional to 3,870,740.64, 5,341,804.36 and 2,151,889.84 is: 2,969,709.31
Step by Step Solution
- Step 1: Write the proportion equation
3,870,740.64 : 5,341,804.36 = 2,151,889.84 : x - Step 2: Convert to fraction form
3,870,740.64/5,341,804.36 = 2,151,889.84/x - Step 3: Cross multiply
3,870,740.64x = 5,341,804.36 × 2,151,889.84 - Step 4: Simplify right side
3,870,740.64x = 11,494,974,529,551.70 - Step 5: Solve for x
x = 11,494,974,529,551.70/3,870,740.64 - Step 6: Final answer
x = 2,969,709.31
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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.