Finding the Fourth Proportional to 3,937,872.12, 5,434,263.72 and 2,127,036.12
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Solution
The fourth proportional to 3,937,872.12, 5,434,263.72 and 2,127,036.12 is: 2,935,309.95
Step by Step Solution
- Step 1: Write the proportion equation
3,937,872.12 : 5,434,263.72 = 2,127,036.12 : x - Step 2: Convert to fraction form
3,937,872.12/5,434,263.72 = 2,127,036.12/x - Step 3: Cross multiply
3,937,872.12x = 5,434,263.72 × 2,127,036.12 - Step 4: Simplify right side
3,937,872.12x = 11,558,875,218,045.57 - Step 5: Solve for x
x = 11,558,875,218,045.57/3,937,872.12 - Step 6: Final answer
x = 2,935,309.95
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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.