Finding the Fourth Proportional to 3,490, 5,237.40 and 1,438
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Solution
The fourth proportional to 3,490, 5,237.40 and 1,438 is: 2,157.99
Step by Step Solution
- Step 1: Write the proportion equation
3,490 : 5,237.40 = 1,438 : x - Step 2: Convert to fraction form
3,490/5,237.40 = 1,438/x - Step 3: Cross multiply
3,490x = 5,237.40 × 1,438 - Step 4: Simplify right side
3,490x = 7,531,381.20 - Step 5: Solve for x
x = 7,531,381.20/3,490 - Step 6: Final answer
x = 2,157.99
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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.