Finding the Fourth Proportional to 3,879,169.36, 5,352,870.55 and 2,160,449.80
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Solution
The fourth proportional to 3,879,169.36, 5,352,870.55 and 2,160,449.80 is: 2,981,207.32
Step by Step Solution
- Step 1: Write the proportion equation
3,879,169.36 : 5,352,870.55 = 2,160,449.80 : x - Step 2: Convert to fraction form
3,879,169.36/5,352,870.55 = 2,160,449.80/x - Step 3: Cross multiply
3,879,169.36x = 5,352,870.55 × 2,160,449.80 - Step 4: Simplify right side
3,879,169.36x = 11,564,608,109,173.39 - Step 5: Solve for x
x = 11,564,608,109,173.39/3,879,169.36 - Step 6: Final answer
x = 2,981,207.32
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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.