Finding the Fourth Proportional to 3,936,910.94, 5,432,937.16 and 2,126,074.94
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Solution
The fourth proportional to 3,936,910.94, 5,432,937.16 and 2,126,074.94 is: 2,933,983.45
Step by Step Solution
- Step 1: Write the proportion equation
3,936,910.94 : 5,432,937.16 = 2,126,074.94 : x - Step 2: Convert to fraction form
3,936,910.94/5,432,937.16 = 2,126,074.94/x - Step 3: Cross multiply
3,936,910.94x = 5,432,937.16 × 2,126,074.94 - Step 4: Simplify right side
3,936,910.94x = 11,550,831,513,990.90 - Step 5: Solve for x
x = 11,550,831,513,990.90/3,936,910.94 - Step 6: Final answer
x = 2,933,983.45
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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.