Finding the Fourth Proportional to 1,686.42, 2,530.04 and 820.53
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Solution
The fourth proportional to 1,686.42, 2,530.04 and 820.53 is: 1,230.99
Step by Step Solution
- Step 1: Write the proportion equation
1,686.42 : 2,530.04 = 820.53 : x - Step 2: Convert to fraction form
1,686.42/2,530.04 = 820.53/x - Step 3: Cross multiply
1,686.42x = 2,530.04 × 820.53 - Step 4: Simplify right side
1,686.42x = 2,075,969.62 - Step 5: Solve for x
x = 2,075,969.62/1,686.42 - Step 6: Final answer
x = 1,230.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.