Home / 3,928.56-5,420.74-2,604.06

Finding the Fourth Proportional to 3,928.56, 5,420.74 and 2,604.06

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Solution

The fourth proportional to 3,928.56, 5,420.74 and 2,604.06 is: 3,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.56 : 5,420.74 = 2,604.06 : x
  2. Step 2: Convert to fraction form
    3,928.56/5,420.74 = 2,604.06/x
  3. Step 3: Cross multiply
    3,928.56x = 5,420.74 × 2,604.06
  4. Step 4: Simplify right side
    3,928.56x = 14,115,932.20
  5. Step 5: Solve for x
    x = 14,115,932.20/3,928.56
  6. Step 6: Final answer
    x = 3,593.16

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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.