Home / 3,949.36-5,451.21-2,456.39

Finding the Fourth Proportional to 3,949.36, 5,451.21 and 2,456.39

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Solution

The fourth proportional to 3,949.36, 5,451.21 and 2,456.39 is: 3,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.36 : 5,451.21 = 2,456.39 : x
  2. Step 2: Convert to fraction form
    3,949.36/5,451.21 = 2,456.39/x
  3. Step 3: Cross multiply
    3,949.36x = 5,451.21 × 2,456.39
  4. Step 4: Simplify right side
    3,949.36x = 13,390,311.36
  5. Step 5: Solve for x
    x = 13,390,311.36/3,949.36
  6. Step 6: Final answer
    x = 3,390.50

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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.