Finding the Fourth Proportional to 2,168,588.74, 2,991,671.13 and 1,308,874.18
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Solution
The fourth proportional to 2,168,588.74, 2,991,671.13 and 1,308,874.18 is: 1,805,654.08
Step by Step Solution
- Step 1: Write the proportion equation
2,168,588.74 : 2,991,671.13 = 1,308,874.18 : x - Step 2: Convert to fraction form
2,168,588.74/2,991,671.13 = 1,308,874.18/x - Step 3: Cross multiply
2,168,588.74x = 2,991,671.13 × 1,308,874.18 - Step 4: Simplify right side
2,168,588.74x = 3,915,721,097,108.42 - Step 5: Solve for x
x = 3,915,721,097,108.42/2,168,588.74 - Step 6: Final answer
x = 1,805,654.08
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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.