Finding the Fourth Proportional to 3,860,455.98, 5,328,067.89 and 2,142,130.08
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Solution
The fourth proportional to 3,860,455.98, 5,328,067.89 and 2,142,130.08 is: 2,956,493.88
Step by Step Solution
- Step 1: Write the proportion equation
3,860,455.98 : 5,328,067.89 = 2,142,130.08 : x - Step 2: Convert to fraction form
3,860,455.98/5,328,067.89 = 2,142,130.08/x - Step 3: Cross multiply
3,860,455.98x = 5,328,067.89 × 2,142,130.08 - Step 4: Simplify right side
3,860,455.98x = 11,413,414,495,451.13 - Step 5: Solve for x
x = 11,413,414,495,451.13/3,860,455.98 - Step 6: Final answer
x = 2,956,493.88
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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.