Home / 3,883.60-5,359.43-2,115.20

Finding the Fourth Proportional to 3,883.60, 5,359.43 and 2,115.20

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Solution

The fourth proportional to 3,883.60, 5,359.43 and 2,115.20 is: 2,919.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.60 : 5,359.43 = 2,115.20 : x
  2. Step 2: Convert to fraction form
    3,883.60/5,359.43 = 2,115.20/x
  3. Step 3: Cross multiply
    3,883.60x = 5,359.43 × 2,115.20
  4. Step 4: Simplify right side
    3,883.60x = 11,336,285.02
  5. Step 5: Solve for x
    x = 11,336,285.02/3,883.60
  6. Step 6: Final answer
    x = 2,919.01

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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.