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Finding the Fourth Proportional to 2,759.64, 4,133.86 and 1,368.80

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Solution

The fourth proportional to 2,759.64, 4,133.86 and 1,368.80 is: 2,050.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.64 : 4,133.86 = 1,368.80 : x
  2. Step 2: Convert to fraction form
    2,759.64/4,133.86 = 1,368.80/x
  3. Step 3: Cross multiply
    2,759.64x = 4,133.86 × 1,368.80
  4. Step 4: Simplify right side
    2,759.64x = 5,658,427.57
  5. Step 5: Solve for x
    x = 5,658,427.57/2,759.64
  6. Step 6: Final answer
    x = 2,050.42

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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.