Finding the Fourth Proportional to 3,939,004.13, 5,435,820.44 and 2,128,168.13
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Solution
The fourth proportional to 3,939,004.13, 5,435,820.44 and 2,128,168.13 is: 2,936,869.17
Step by Step Solution
- Step 1: Write the proportion equation
3,939,004.13 : 5,435,820.44 = 2,128,168.13 : x - Step 2: Convert to fraction form
3,939,004.13/5,435,820.44 = 2,128,168.13/x - Step 3: Cross multiply
3,939,004.13x = 5,435,820.44 × 2,128,168.13 - Step 4: Simplify right side
3,939,004.13x = 11,568,339,796,580.18 - Step 5: Solve for x
x = 11,568,339,796,580.18/3,939,004.13 - Step 6: Final answer
x = 2,936,869.17
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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.