Finding the Fourth Proportional to 3,813,923.71, 5,261,731.38 and 2,159,691.09
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Solution
The fourth proportional to 3,813,923.71, 5,261,731.38 and 2,159,691.09 is: 2,979,533.74
Step by Step Solution
- Step 1: Write the proportion equation
3,813,923.71 : 5,261,731.38 = 2,159,691.09 : x - Step 2: Convert to fraction form
3,813,923.71/5,261,731.38 = 2,159,691.09/x - Step 3: Cross multiply
3,813,923.71x = 5,261,731.38 × 2,159,691.09 - Step 4: Simplify right side
3,813,923.71x = 11,363,714,379,359.40 - Step 5: Solve for x
x = 11,363,714,379,359.40/3,813,923.71 - Step 6: Final answer
x = 2,979,533.74
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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.