Finding the Fourth Proportional to 3,868,638.21, 5,338,769.10 and 2,126,497.80
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Solution
The fourth proportional to 3,868,638.21, 5,338,769.10 and 2,126,497.80 is: 2,934,593.55
Step by Step Solution
- Step 1: Write the proportion equation
3,868,638.21 : 5,338,769.10 = 2,126,497.80 : x - Step 2: Convert to fraction form
3,868,638.21/5,338,769.10 = 2,126,497.80/x - Step 3: Cross multiply
3,868,638.21x = 5,338,769.10 × 2,126,497.80 - Step 4: Simplify right side
3,868,638.21x = 11,352,880,745,857.98 - Step 5: Solve for x
x = 11,352,880,745,857.98/3,868,638.21 - Step 6: Final answer
x = 2,934,593.55
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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.