Finding the Fourth Proportional to 5,183,690.38, 7,153,495.80 and 2,891,851.06
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Solution
The fourth proportional to 5,183,690.38, 7,153,495.80 and 2,891,851.06 is: 3,990,756.18
Step by Step Solution
- Step 1: Write the proportion equation
5,183,690.38 : 7,153,495.80 = 2,891,851.06 : x - Step 2: Convert to fraction form
5,183,690.38/7,153,495.80 = 2,891,851.06/x - Step 3: Cross multiply
5,183,690.38x = 7,153,495.80 × 2,891,851.06 - Step 4: Simplify right side
5,183,690.38x = 20,686,844,411,935.55 - Step 5: Solve for x
x = 20,686,844,411,935.55/5,183,690.38 - Step 6: Final answer
x = 3,990,756.18
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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.