Finding the Fourth Proportional to 3,854,971.13, 5,319,976.79 and 2,135,930.81
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Solution
The fourth proportional to 3,854,971.13, 5,319,976.79 and 2,135,930.81 is: 2,947,649.14
Step by Step Solution
- Step 1: Write the proportion equation
3,854,971.13 : 5,319,976.79 = 2,135,930.81 : x - Step 2: Convert to fraction form
3,854,971.13/5,319,976.79 = 2,135,930.81/x - Step 3: Cross multiply
3,854,971.13x = 5,319,976.79 × 2,135,930.81 - Step 4: Simplify right side
3,854,971.13x = 11,363,102,312,985.85 - Step 5: Solve for x
x = 11,363,102,312,985.85/3,854,971.13 - Step 6: Final answer
x = 2,947,649.14
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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.