Home / 1,919.40-2,879.10-1,773.60

Finding the Fourth Proportional to 1,919.40, 2,879.10 and 1,773.60

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Solution

The fourth proportional to 1,919.40, 2,879.10 and 1,773.60 is: 2,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.40 : 2,879.10 = 1,773.60 : x
  2. Step 2: Convert to fraction form
    1,919.40/2,879.10 = 1,773.60/x
  3. Step 3: Cross multiply
    1,919.40x = 2,879.10 × 1,773.60
  4. Step 4: Simplify right side
    1,919.40x = 5,106,371.76
  5. Step 5: Solve for x
    x = 5,106,371.76/1,919.40
  6. Step 6: Final answer
    x = 2,660.40

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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.