Finding the Fourth Proportional to 3,975,557.76, 5,486,279.04 and 2,164,838.40
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Solution
The fourth proportional to 3,975,557.76, 5,486,279.04 and 2,164,838.40 is: 2,987,482.07
Step by Step Solution
- Step 1: Write the proportion equation
3,975,557.76 : 5,486,279.04 = 2,164,838.40 : x - Step 2: Convert to fraction form
3,975,557.76/5,486,279.04 = 2,164,838.40/x - Step 3: Cross multiply
3,975,557.76x = 5,486,279.04 × 2,164,838.40 - Step 4: Simplify right side
3,975,557.76x = 11,876,907,538,907.13 - Step 5: Solve for x
x = 11,876,907,538,907.13/3,975,557.76 - Step 6: Final answer
x = 2,987,482.07
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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.