Finding the Fourth Proportional to 3,879,916.92, 5,354,286.80 and 2,249,269.53
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Solution
The fourth proportional to 3,879,916.92, 5,354,286.80 and 2,249,269.53 is: 3,103,992.79
Step by Step Solution
- Step 1: Write the proportion equation
3,879,916.92 : 5,354,286.80 = 2,249,269.53 : x - Step 2: Convert to fraction form
3,879,916.92/5,354,286.80 = 2,249,269.53/x - Step 3: Cross multiply
3,879,916.92x = 5,354,286.80 × 2,249,269.53 - Step 4: Simplify right side
3,879,916.92x = 12,043,234,142,874.86 - Step 5: Solve for x
x = 12,043,234,142,874.86/3,879,916.92 - Step 6: Final answer
x = 3,103,992.79
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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.