Finding the Fourth Proportional to 4,969.78, 7,454.64 and 1,272
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Solution
The fourth proportional to 4,969.78, 7,454.64 and 1,272 is: 1,907.99
Step by Step Solution
- Step 1: Write the proportion equation
4,969.78 : 7,454.64 = 1,272 : x - Step 2: Convert to fraction form
4,969.78/7,454.64 = 1,272/x - Step 3: Cross multiply
4,969.78x = 7,454.64 × 1,272 - Step 4: Simplify right side
4,969.78x = 9,482,302.08 - Step 5: Solve for x
x = 9,482,302.08/4,969.78 - Step 6: Final answer
x = 1,907.99
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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.