Home / 2,840.60-3,919.75-1,581.73

Finding the Fourth Proportional to 2,840.60, 3,919.75 and 1,581.73

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Solution

The fourth proportional to 2,840.60, 3,919.75 and 1,581.73 is: 2,182.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.60 : 3,919.75 = 1,581.73 : x
  2. Step 2: Convert to fraction form
    2,840.60/3,919.75 = 1,581.73/x
  3. Step 3: Cross multiply
    2,840.60x = 3,919.75 × 1,581.73
  4. Step 4: Simplify right side
    2,840.60x = 6,199,972.41
  5. Step 5: Solve for x
    x = 6,199,972.41/2,840.60
  6. Step 6: Final answer
    x = 2,182.63

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1.5x scale

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.