Finding the Fourth Proportional to 3,876,746.76, 5,349,910.68 and 2,157,830.46
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Solution
The fourth proportional to 3,876,746.76, 5,349,910.68 and 2,157,830.46 is: 2,977,806.12
Step by Step Solution
- Step 1: Write the proportion equation
3,876,746.76 : 5,349,910.68 = 2,157,830.46 : x - Step 2: Convert to fraction form
3,876,746.76/5,349,910.68 = 2,157,830.46/x - Step 3: Cross multiply
3,876,746.76x = 5,349,910.68 × 2,157,830.46 - Step 4: Simplify right side
3,876,746.76x = 11,544,200,223,583.31 - Step 5: Solve for x
x = 11,544,200,223,583.31/3,876,746.76 - Step 6: Final answer
x = 2,977,806.12
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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.