Finding the Fourth Proportional to 3,869,678.88, 5,339,926.80 and 2,150,740.08
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Solution
The fourth proportional to 3,869,678.88, 5,339,926.80 and 2,150,740.08 is: 2,967,893.45
Step by Step Solution
- Step 1: Write the proportion equation
3,869,678.88 : 5,339,926.80 = 2,150,740.08 : x - Step 2: Convert to fraction form
3,869,678.88/5,339,926.80 = 2,150,740.08/x - Step 3: Cross multiply
3,869,678.88x = 5,339,926.80 × 2,150,740.08 - Step 4: Simplify right side
3,869,678.88x = 11,484,794,593,026.14 - Step 5: Solve for x
x = 11,484,794,593,026.14/3,869,678.88 - Step 6: Final answer
x = 2,967,893.45
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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.