Finding the Fourth Proportional to 3,878,556.38, 5,352,356.76 and 2,136,192.32
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Solution
The fourth proportional to 3,878,556.38, 5,352,356.76 and 2,136,192.32 is: 2,947,917.29
Step by Step Solution
- Step 1: Write the proportion equation
3,878,556.38 : 5,352,356.76 = 2,136,192.32 : x - Step 2: Convert to fraction form
3,878,556.38/5,352,356.76 = 2,136,192.32/x - Step 3: Cross multiply
3,878,556.38x = 5,352,356.76 × 2,136,192.32 - Step 4: Simplify right side
3,878,556.38x = 11,433,663,404,612.08 - Step 5: Solve for x
x = 11,433,663,404,612.08/3,878,556.38 - Step 6: Final answer
x = 2,947,917.29
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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.