Finding the Fourth Proportional to 3,855,138.71, 5,320,027.58 and 2,112,794.69
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Solution
The fourth proportional to 3,855,138.71, 5,320,027.58 and 2,112,794.69 is: 2,915,621.68
Step by Step Solution
- Step 1: Write the proportion equation
3,855,138.71 : 5,320,027.58 = 2,112,794.69 : x - Step 2: Convert to fraction form
3,855,138.71/5,320,027.58 = 2,112,794.69/x - Step 3: Cross multiply
3,855,138.71x = 5,320,027.58 × 2,112,794.69 - Step 4: Simplify right side
3,855,138.71x = 11,240,125,984,513.44 - Step 5: Solve for x
x = 11,240,125,984,513.44/3,855,138.71 - Step 6: Final answer
x = 2,915,621.68
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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.