Finding the Fourth Proportional to 3,871,105.84, 5,340,591.66 and 2,239,210.18
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Solution
The fourth proportional to 3,871,105.84, 5,340,591.66 and 2,239,210.18 is: 3,089,222.49
Step by Step Solution
- Step 1: Write the proportion equation
3,871,105.84 : 5,340,591.66 = 2,239,210.18 : x - Step 2: Convert to fraction form
3,871,105.84/5,340,591.66 = 2,239,210.18/x - Step 3: Cross multiply
3,871,105.84x = 5,340,591.66 × 2,239,210.18 - Step 4: Simplify right side
3,871,105.84x = 11,958,707,212,295.10 - Step 5: Solve for x
x = 11,958,707,212,295.10/3,871,105.84 - Step 6: Final answer
x = 3,089,222.49
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Double scale
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Similar ratio
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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.