Home / 6,616.20-9,128.08-3,964.48

Finding the Fourth Proportional to 6,616.20, 9,128.08 and 3,964.48

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Solution

The fourth proportional to 6,616.20, 9,128.08 and 3,964.48 is: 5,469.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.20 : 9,128.08 = 3,964.48 : x
  2. Step 2: Convert to fraction form
    6,616.20/9,128.08 = 3,964.48/x
  3. Step 3: Cross multiply
    6,616.20x = 9,128.08 × 3,964.48
  4. Step 4: Simplify right side
    6,616.20x = 36,188,090.60
  5. Step 5: Solve for x
    x = 36,188,090.60/6,616.20
  6. Step 6: Final answer
    x = 5,469.62

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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.