Finding the Fourth Proportional to 3,855,229.57, 5,320,248.30 and 2,136,378.79
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Solution
The fourth proportional to 3,855,229.57, 5,320,248.30 and 2,136,378.79 is: 2,948,220.18
Step by Step Solution
- Step 1: Write the proportion equation
3,855,229.57 : 5,320,248.30 = 2,136,378.79 : x - Step 2: Convert to fraction form
3,855,229.57/5,320,248.30 = 2,136,378.79/x - Step 3: Cross multiply
3,855,229.57x = 5,320,248.30 × 2,136,378.79 - Step 4: Simplify right side
3,855,229.57x = 11,366,065,625,653.56 - Step 5: Solve for x
x = 11,366,065,625,653.56/3,855,229.57 - Step 6: Final answer
x = 2,948,220.18
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1.5x scale
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.