Finding the Fourth Proportional to 2,980, 4,470 and 1,248.63
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Solution
The fourth proportional to 2,980, 4,470 and 1,248.63 is: 1,872.95
Step by Step Solution
- Step 1: Write the proportion equation
2,980 : 4,470 = 1,248.63 : x - Step 2: Convert to fraction form
2,980/4,470 = 1,248.63/x - Step 3: Cross multiply
2,980x = 4,470 × 1,248.63 - Step 4: Simplify right side
2,980x = 5,581,376.10 - Step 5: Solve for x
x = 5,581,376.10/2,980 - Step 6: Final answer
x = 1,872.95
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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.