Finding the Third Proportional to 861 and 1,369.50
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Solution
The third proportional to 861 and 1,369.50 is: 2,178.32
Step by Step Solution
- Step 1: Write the proportion equation
861 : 1,369.50 = 1,369.50 : x - Step 2: Convert to fraction form
861/1,369.50 = 1,369.50/x - Step 3: Cross multiply
861x = 1,369.50 × 1,369.50 - Step 4: Simplify right side
861x = 1,875,530.25 - Step 5: Solve for x
x = 1,875,530.25/861 - Step 6: Final answer
x = 2,178.32
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These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.