Home / 3,928.06-5,420.74-2,249.50

Finding the Fourth Proportional to 3,928.06, 5,420.74 and 2,249.50

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Solution

The fourth proportional to 3,928.06, 5,420.74 and 2,249.50 is: 3,104.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.06 : 5,420.74 = 2,249.50 : x
  2. Step 2: Convert to fraction form
    3,928.06/5,420.74 = 2,249.50/x
  3. Step 3: Cross multiply
    3,928.06x = 5,420.74 × 2,249.50
  4. Step 4: Simplify right side
    3,928.06x = 12,193,954.63
  5. Step 5: Solve for x
    x = 12,193,954.63/3,928.06
  6. Step 6: Final answer
    x = 3,104.32

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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.