Home / 4,229.40-6,331.62-3,138.60

Finding the Fourth Proportional to 4,229.40, 6,331.62 and 3,138.60

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Solution

The fourth proportional to 4,229.40, 6,331.62 and 3,138.60 is: 4,698.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,229.40 : 6,331.62 = 3,138.60 : x
  2. Step 2: Convert to fraction form
    4,229.40/6,331.62 = 3,138.60/x
  3. Step 3: Cross multiply
    4,229.40x = 6,331.62 × 3,138.60
  4. Step 4: Simplify right side
    4,229.40x = 19,872,422.53
  5. Step 5: Solve for x
    x = 19,872,422.53/4,229.40
  6. Step 6: Final answer
    x = 4,698.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.