Home / 2,759.20-4,138.80-1,199.95

Finding the Fourth Proportional to 2,759.20, 4,138.80 and 1,199.95

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Solution

The fourth proportional to 2,759.20, 4,138.80 and 1,199.95 is: 1,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.20 : 4,138.80 = 1,199.95 : x
  2. Step 2: Convert to fraction form
    2,759.20/4,138.80 = 1,199.95/x
  3. Step 3: Cross multiply
    2,759.20x = 4,138.80 × 1,199.95
  4. Step 4: Simplify right side
    2,759.20x = 4,966,353.06
  5. Step 5: Solve for x
    x = 4,966,353.06/2,759.20
  6. Step 6: Final answer
    x = 1,799.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.