Finding the Fourth Proportional to 3,964,731.68, 5,471,368.08 and 2,153,908.64
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Solution
The fourth proportional to 3,964,731.68, 5,471,368.08 and 2,153,908.64 is: 2,972,414.76
Step by Step Solution
- Step 1: Write the proportion equation
3,964,731.68 : 5,471,368.08 = 2,153,908.64 : x - Step 2: Convert to fraction form
3,964,731.68/5,471,368.08 = 2,153,908.64/x - Step 3: Cross multiply
3,964,731.68x = 5,471,368.08 × 2,153,908.64 - Step 4: Simplify right side
3,964,731.68x = 11,784,826,980,132.21 - Step 5: Solve for x
x = 11,784,826,980,132.21/3,964,731.68 - Step 6: Final answer
x = 2,972,414.76
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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.