Finding the Fourth Proportional to 3,811,865.76, 5,258,389.20 and 3,087,531.36
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Solution
The fourth proportional to 3,811,865.76, 5,258,389.20 and 3,087,531.36 is: 4,259,185.02
Step by Step Solution
- Step 1: Write the proportion equation
3,811,865.76 : 5,258,389.20 = 3,087,531.36 : x - Step 2: Convert to fraction form
3,811,865.76/5,258,389.20 = 3,087,531.36/x - Step 3: Cross multiply
3,811,865.76x = 5,258,389.20 × 3,087,531.36 - Step 4: Simplify right side
3,811,865.76x = 16,235,441,558,085.31 - Step 5: Solve for x
x = 16,235,441,558,085.31/3,811,865.76 - Step 6: Final answer
x = 4,259,185.02
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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.