Home / 3,258.40-4,887.39-1,408.21

Finding the Fourth Proportional to 3,258.40, 4,887.39 and 1,408.21

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Solution

The fourth proportional to 3,258.40, 4,887.39 and 1,408.21 is: 2,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.40 : 4,887.39 = 1,408.21 : x
  2. Step 2: Convert to fraction form
    3,258.40/4,887.39 = 1,408.21/x
  3. Step 3: Cross multiply
    3,258.40x = 4,887.39 × 1,408.21
  4. Step 4: Simplify right side
    3,258.40x = 6,882,471.47
  5. Step 5: Solve for x
    x = 6,882,471.47/3,258.40
  6. Step 6: Final answer
    x = 2,112.22

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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.