Home / 5,518.10-8,281.20-3,668.60

Finding the Fourth Proportional to 5,518.10, 8,281.20 and 3,668.60

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Solution

The fourth proportional to 5,518.10, 8,281.20 and 3,668.60 is: 5,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.10 : 8,281.20 = 3,668.60 : x
  2. Step 2: Convert to fraction form
    5,518.10/8,281.20 = 3,668.60/x
  3. Step 3: Cross multiply
    5,518.10x = 8,281.20 × 3,668.60
  4. Step 4: Simplify right side
    5,518.10x = 30,380,410.32
  5. Step 5: Solve for x
    x = 30,380,410.32/5,518.10
  6. Step 6: Final answer
    x = 5,505.59

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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.