Home / 6,464.36-8,911.41-5,138.60

Finding the Fourth Proportional to 6,464.36, 8,911.41 and 5,138.60

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Solution

The fourth proportional to 6,464.36, 8,911.41 and 5,138.60 is: 7,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.36 : 8,911.41 = 5,138.60 : x
  2. Step 2: Convert to fraction form
    6,464.36/8,911.41 = 5,138.60/x
  3. Step 3: Cross multiply
    6,464.36x = 8,911.41 × 5,138.60
  4. Step 4: Simplify right side
    6,464.36x = 45,792,171.43
  5. Step 5: Solve for x
    x = 45,792,171.43/6,464.36
  6. Step 6: Final answer
    x = 7,083.79

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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.