Finding the Fourth Proportional to 2,128,415.91, 2,937,276.18 and 1,161,608.28
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Solution
The fourth proportional to 2,128,415.91, 2,937,276.18 and 1,161,608.28 is: 1,603,053.39
Step by Step Solution
- Step 1: Write the proportion equation
2,128,415.91 : 2,937,276.18 = 1,161,608.28 : x - Step 2: Convert to fraction form
2,128,415.91/2,937,276.18 = 1,161,608.28/x - Step 3: Cross multiply
2,128,415.91x = 2,937,276.18 × 1,161,608.28 - Step 4: Simplify right side
2,128,415.91x = 3,411,964,331,334.77 - Step 5: Solve for x
x = 3,411,964,331,334.77/2,128,415.91 - Step 6: Final answer
x = 1,603,053.39
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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.