Home / 3,258.78-4,489.64-2,408.28

Finding the Fourth Proportional to 3,258.78, 4,489.64 and 2,408.28

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Solution

The fourth proportional to 3,258.78, 4,489.64 and 2,408.28 is: 3,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.78 : 4,489.64 = 2,408.28 : x
  2. Step 2: Convert to fraction form
    3,258.78/4,489.64 = 2,408.28/x
  3. Step 3: Cross multiply
    3,258.78x = 4,489.64 × 2,408.28
  4. Step 4: Simplify right side
    3,258.78x = 10,812,310.22
  5. Step 5: Solve for x
    x = 10,812,310.22/3,258.78
  6. Step 6: Final answer
    x = 3,317.90

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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.