Finding the Fourth Proportional to 3,939,007.26, 5,435,824.74 and 2,128,171.26
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Solution
The fourth proportional to 3,939,007.26, 5,435,824.74 and 2,128,171.26 is: 2,936,873.49
Step by Step Solution
- Step 1: Write the proportion equation
3,939,007.26 : 5,435,824.74 = 2,128,171.26 : x - Step 2: Convert to fraction form
3,939,007.26/5,435,824.74 = 2,128,171.26/x - Step 3: Cross multiply
3,939,007.26x = 5,435,824.74 × 2,128,171.26 - Step 4: Simplify right side
3,939,007.26x = 11,568,365,986,064.97 - Step 5: Solve for x
x = 11,568,365,986,064.97/3,939,007.26 - Step 6: Final answer
x = 2,936,873.49
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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.