Finding the Fourth Proportional to 3,908,781.36, 5,394,339.99 and 2,190,455.46
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Solution
The fourth proportional to 3,908,781.36, 5,394,339.99 and 2,190,455.46 is: 3,022,952.78
Step by Step Solution
- Step 1: Write the proportion equation
3,908,781.36 : 5,394,339.99 = 2,190,455.46 : x - Step 2: Convert to fraction form
3,908,781.36/5,394,339.99 = 2,190,455.46/x - Step 3: Cross multiply
3,908,781.36x = 5,394,339.99 × 2,190,455.46 - Step 4: Simplify right side
3,908,781.36x = 11,816,061,484,191.85 - Step 5: Solve for x
x = 11,816,061,484,191.85/3,908,781.36 - Step 6: Final answer
x = 3,022,952.78
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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.