Finding the Fourth Proportional to 3,946,438.12, 5,446,089.42 and 2,135,602.12
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Solution
The fourth proportional to 3,946,438.12, 5,446,089.42 and 2,135,602.12 is: 2,947,133.53
Step by Step Solution
- Step 1: Write the proportion equation
3,946,438.12 : 5,446,089.42 = 2,135,602.12 : x - Step 2: Convert to fraction form
3,946,438.12/5,446,089.42 = 2,135,602.12/x - Step 3: Cross multiply
3,946,438.12x = 5,446,089.42 × 2,135,602.12 - Step 4: Simplify right side
3,946,438.12x = 11,630,680,111,061.57 - Step 5: Solve for x
x = 11,630,680,111,061.57/3,946,438.12 - Step 6: Final answer
x = 2,947,133.53
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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.