Finding the Fourth Proportional to 3,896,510.70, 5,377,350.87 and 2,177,631.18
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Solution
The fourth proportional to 3,896,510.70, 5,377,350.87 and 2,177,631.18 is: 3,005,223.86
Step by Step Solution
- Step 1: Write the proportion equation
3,896,510.70 : 5,377,350.87 = 2,177,631.18 : x - Step 2: Convert to fraction form
3,896,510.70/5,377,350.87 = 2,177,631.18/x - Step 3: Cross multiply
3,896,510.70x = 5,377,350.87 × 2,177,631.18 - Step 4: Simplify right side
3,896,510.70x = 11,709,886,920,312.13 - Step 5: Solve for x
x = 11,709,886,920,312.13/3,896,510.70 - Step 6: Final answer
x = 3,005,223.86
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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.