Finding the Fourth Proportional to 2,138,881.40, 3,208,322.10 and 2,124,135.80
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Solution
The fourth proportional to 2,138,881.40, 3,208,322.10 and 2,124,135.80 is: 3,186,203.70
Step by Step Solution
- Step 1: Write the proportion equation
2,138,881.40 : 3,208,322.10 = 2,124,135.80 : x - Step 2: Convert to fraction form
2,138,881.40/3,208,322.10 = 2,124,135.80/x - Step 3: Cross multiply
2,138,881.40x = 3,208,322.10 × 2,124,135.80 - Step 4: Simplify right side
2,138,881.40x = 6,814,911,830,541.18 - Step 5: Solve for x
x = 6,814,911,830,541.18/2,138,881.40 - Step 6: Final answer
x = 3,186,203.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.