Home / 2,750.60-4,127.26-1,290.80

Finding the Fourth Proportional to 2,750.60, 4,127.26 and 1,290.80

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Solution

The fourth proportional to 2,750.60, 4,127.26 and 1,290.80 is: 1,936.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.60 : 4,127.26 = 1,290.80 : x
  2. Step 2: Convert to fraction form
    2,750.60/4,127.26 = 1,290.80/x
  3. Step 3: Cross multiply
    2,750.60x = 4,127.26 × 1,290.80
  4. Step 4: Simplify right side
    2,750.60x = 5,327,467.21
  5. Step 5: Solve for x
    x = 5,327,467.21/2,750.60
  6. Step 6: Final answer
    x = 1,936.84

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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.