Finding the Fourth Proportional to 8,557.19, 11,809.53 and 4,780.99
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Solution
The fourth proportional to 8,557.19, 11,809.53 and 4,780.99 is: 6,598.11
Step by Step Solution
- Step 1: Write the proportion equation
8,557.19 : 11,809.53 = 4,780.99 : x - Step 2: Convert to fraction form
8,557.19/11,809.53 = 4,780.99/x - Step 3: Cross multiply
8,557.19x = 11,809.53 × 4,780.99 - Step 4: Simplify right side
8,557.19x = 56,461,244.83 - Step 5: Solve for x
x = 56,461,244.83/8,557.19 - Step 6: Final answer
x = 6,598.11
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1.5x scale
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.