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Finding the Fourth Proportional to 1,999.28, 2,757.88 and 1,262

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Solution

The fourth proportional to 1,999.28, 2,757.88 and 1,262 is: 1,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.28 : 2,757.88 = 1,262 : x
  2. Step 2: Convert to fraction form
    1,999.28/2,757.88 = 1,262/x
  3. Step 3: Cross multiply
    1,999.28x = 2,757.88 × 1,262
  4. Step 4: Simplify right side
    1,999.28x = 3,480,444.56
  5. Step 5: Solve for x
    x = 3,480,444.56/1,999.28
  6. Step 6: Final answer
    x = 1,740.85

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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.