Finding the Fourth Proportional to 1,404.50, 1,938.22 and 783.50
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Solution
The fourth proportional to 1,404.50, 1,938.22 and 783.50 is: 1,081.24
Step by Step Solution
- Step 1: Write the proportion equation
1,404.50 : 1,938.22 = 783.50 : x - Step 2: Convert to fraction form
1,404.50/1,938.22 = 783.50/x - Step 3: Cross multiply
1,404.50x = 1,938.22 × 783.50 - Step 4: Simplify right side
1,404.50x = 1,518,595.37 - Step 5: Solve for x
x = 1,518,595.37/1,404.50 - Step 6: Final answer
x = 1,081.24
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.