Finding the Fourth Proportional to 3,880,468.47, 5,355,212.18 and 2,161,590.15
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Solution
The fourth proportional to 3,880,468.47, 5,355,212.18 and 2,161,590.15 is: 2,983,086.70
Step by Step Solution
- Step 1: Write the proportion equation
3,880,468.47 : 5,355,212.18 = 2,161,590.15 : x - Step 2: Convert to fraction form
3,880,468.47/5,355,212.18 = 2,161,590.15/x - Step 3: Cross multiply
3,880,468.47x = 5,355,212.18 × 2,161,590.15 - Step 4: Simplify right side
3,880,468.47x = 11,575,773,888,640.08 - Step 5: Solve for x
x = 11,575,773,888,640.08/3,880,468.47 - Step 6: Final answer
x = 2,983,086.70
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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.