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Finding the Fourth Proportional to 1,999.48, 2,757.49 and 1,253.53

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Solution

The fourth proportional to 1,999.48, 2,757.49 and 1,253.53 is: 1,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.48 : 2,757.49 = 1,253.53 : x
  2. Step 2: Convert to fraction form
    1,999.48/2,757.49 = 1,253.53/x
  3. Step 3: Cross multiply
    1,999.48x = 2,757.49 × 1,253.53
  4. Step 4: Simplify right side
    1,999.48x = 3,456,596.44
  5. Step 5: Solve for x
    x = 3,456,596.44/1,999.48
  6. Step 6: Final answer
    x = 1,728.75

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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.