Finding the Fourth Proportional to 2,628.98, 3,944.15 and 780.08
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Solution
The fourth proportional to 2,628.98, 3,944.15 and 780.08 is: 1,170.32
Step by Step Solution
- Step 1: Write the proportion equation
2,628.98 : 3,944.15 = 780.08 : x - Step 2: Convert to fraction form
2,628.98/3,944.15 = 780.08/x - Step 3: Cross multiply
2,628.98x = 3,944.15 × 780.08 - Step 4: Simplify right side
2,628.98x = 3,076,728.91 - Step 5: Solve for x
x = 3,076,728.91/2,628.98 - Step 6: Final answer
x = 1,170.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.