Home / 3,629.28-5,445.92-2,171.20

Finding the Fourth Proportional to 3,629.28, 5,445.92 and 2,171.20

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Solution

The fourth proportional to 3,629.28, 5,445.92 and 2,171.20 is: 3,258.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.28 : 5,445.92 = 2,171.20 : x
  2. Step 2: Convert to fraction form
    3,629.28/5,445.92 = 2,171.20/x
  3. Step 3: Cross multiply
    3,629.28x = 5,445.92 × 2,171.20
  4. Step 4: Simplify right side
    3,629.28x = 11,824,181.50
  5. Step 5: Solve for x
    x = 11,824,181.50/3,629.28
  6. Step 6: Final answer
    x = 3,258.00

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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.