Home / 6,431.45-8,879.27-4,197.20

Finding the Fourth Proportional to 6,431.45, 8,879.27 and 4,197.20

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Solution

The fourth proportional to 6,431.45, 8,879.27 and 4,197.20 is: 5,794.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.45 : 8,879.27 = 4,197.20 : x
  2. Step 2: Convert to fraction form
    6,431.45/8,879.27 = 4,197.20/x
  3. Step 3: Cross multiply
    6,431.45x = 8,879.27 × 4,197.20
  4. Step 4: Simplify right side
    6,431.45x = 37,268,072.04
  5. Step 5: Solve for x
    x = 37,268,072.04/6,431.45
  6. Step 6: Final answer
    x = 5,794.66

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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.