Home / 3,928.21-5,416.91-2,601.43

Finding the Fourth Proportional to 3,928.21, 5,416.91 and 2,601.43

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Solution

The fourth proportional to 3,928.21, 5,416.91 and 2,601.43 is: 3,587.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.21 : 5,416.91 = 2,601.43 : x
  2. Step 2: Convert to fraction form
    3,928.21/5,416.91 = 2,601.43/x
  3. Step 3: Cross multiply
    3,928.21x = 5,416.91 × 2,601.43
  4. Step 4: Simplify right side
    3,928.21x = 14,091,695.39
  5. Step 5: Solve for x
    x = 14,091,695.39/3,928.21
  6. Step 6: Final answer
    x = 3,587.31

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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.