Home / 1,824.60-2,739.60-1,279.20

Finding the Fourth Proportional to 1,824.60, 2,739.60 and 1,279.20

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Solution

The fourth proportional to 1,824.60, 2,739.60 and 1,279.20 is: 1,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,824.60 : 2,739.60 = 1,279.20 : x
  2. Step 2: Convert to fraction form
    1,824.60/2,739.60 = 1,279.20/x
  3. Step 3: Cross multiply
    1,824.60x = 2,739.60 × 1,279.20
  4. Step 4: Simplify right side
    1,824.60x = 3,504,496.32
  5. Step 5: Solve for x
    x = 3,504,496.32/1,824.60
  6. Step 6: Final answer
    x = 1,920.69

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1.5x scale

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.