Finding the Third Proportional to 921 and 1,628
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Solution
The third proportional to 921 and 1,628 is: 2,877.72
Step by Step Solution
- Step 1: Write the proportion equation
921 : 1,628 = 1,628 : x - Step 2: Convert to fraction form
921/1,628 = 1,628/x - Step 3: Cross multiply
921x = 1,628 × 1,628 - Step 4: Simplify right side
921x = 2,650,384 - Step 5: Solve for x
x = 2,650,384/921 - Step 6: Final answer
x = 2,877.72
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These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.