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Finding the Fourth Proportional to 1,996.51, 2,755.13 and 1,157.25

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Solution

The fourth proportional to 1,996.51, 2,755.13 and 1,157.25 is: 1,596.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.51 : 2,755.13 = 1,157.25 : x
  2. Step 2: Convert to fraction form
    1,996.51/2,755.13 = 1,157.25/x
  3. Step 3: Cross multiply
    1,996.51x = 2,755.13 × 1,157.25
  4. Step 4: Simplify right side
    1,996.51x = 3,188,374.19
  5. Step 5: Solve for x
    x = 3,188,374.19/1,996.51
  6. Step 6: Final answer
    x = 1,596.97

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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.