Home / 2,765.04-4,144.40-1,120.80

Finding the Fourth Proportional to 2,765.04, 4,144.40 and 1,120.80

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Solution

The fourth proportional to 2,765.04, 4,144.40 and 1,120.80 is: 1,679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.04 : 4,144.40 = 1,120.80 : x
  2. Step 2: Convert to fraction form
    2,765.04/4,144.40 = 1,120.80/x
  3. Step 3: Cross multiply
    2,765.04x = 4,144.40 × 1,120.80
  4. Step 4: Simplify right side
    2,765.04x = 4,645,043.52
  5. Step 5: Solve for x
    x = 4,645,043.52/2,765.04
  6. Step 6: Final answer
    x = 1,679.92

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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.