Home / 3,928.10-5,414.24-3,369.20

Finding the Fourth Proportional to 3,928.10, 5,414.24 and 3,369.20

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Solution

The fourth proportional to 3,928.10, 5,414.24 and 3,369.20 is: 4,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.10 : 5,414.24 = 3,369.20 : x
  2. Step 2: Convert to fraction form
    3,928.10/5,414.24 = 3,369.20/x
  3. Step 3: Cross multiply
    3,928.10x = 5,414.24 × 3,369.20
  4. Step 4: Simplify right side
    3,928.10x = 18,241,638.76
  5. Step 5: Solve for x
    x = 18,241,638.76/3,928.10
  6. Step 6: Final answer
    x = 4,643.89

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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.