Home / 2,840.54-3,919.87-1,581.60

Finding the Fourth Proportional to 2,840.54, 3,919.87 and 1,581.60

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Solution

The fourth proportional to 2,840.54, 3,919.87 and 1,581.60 is: 2,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.54 : 3,919.87 = 1,581.60 : x
  2. Step 2: Convert to fraction form
    2,840.54/3,919.87 = 1,581.60/x
  3. Step 3: Cross multiply
    2,840.54x = 3,919.87 × 1,581.60
  4. Step 4: Simplify right side
    2,840.54x = 6,199,638.88
  5. Step 5: Solve for x
    x = 6,199,638.88/2,840.54
  6. Step 6: Final answer
    x = 2,182.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.