Home / 5,485.64-8,231.42-3,984.80

Finding the Fourth Proportional to 5,485.64, 8,231.42 and 3,984.80

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Solution

The fourth proportional to 5,485.64, 8,231.42 and 3,984.80 is: 5,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.64 : 8,231.42 = 3,984.80 : x
  2. Step 2: Convert to fraction form
    5,485.64/8,231.42 = 3,984.80/x
  3. Step 3: Cross multiply
    5,485.64x = 8,231.42 × 3,984.80
  4. Step 4: Simplify right side
    5,485.64x = 32,800,562.42
  5. Step 5: Solve for x
    x = 32,800,562.42/5,485.64
  6. Step 6: Final answer
    x = 5,979.35

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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.