Finding the Fourth Proportional to 3,899,496.85, 5,381,204.95 and 2,157,120.84
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Solution
The fourth proportional to 3,899,496.85, 5,381,204.95 and 2,157,120.84 is: 2,976,771.05
Step by Step Solution
- Step 1: Write the proportion equation
3,899,496.85 : 5,381,204.95 = 2,157,120.84 : x - Step 2: Convert to fraction form
3,899,496.85/5,381,204.95 = 2,157,120.84/x - Step 3: Cross multiply
3,899,496.85x = 5,381,204.95 × 2,157,120.84 - Step 4: Simplify right side
3,899,496.85x = 11,607,909,341,956.16 - Step 5: Solve for x
x = 11,607,909,341,956.16/3,899,496.85 - Step 6: Final answer
x = 2,976,771.05
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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.