Home / 3,336.80-5,005.20-1,028.30

Finding the Fourth Proportional to 3,336.80, 5,005.20 and 1,028.30

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Solution

The fourth proportional to 3,336.80, 5,005.20 and 1,028.30 is: 1,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.80 : 5,005.20 = 1,028.30 : x
  2. Step 2: Convert to fraction form
    3,336.80/5,005.20 = 1,028.30/x
  3. Step 3: Cross multiply
    3,336.80x = 5,005.20 × 1,028.30
  4. Step 4: Simplify right side
    3,336.80x = 5,146,847.16
  5. Step 5: Solve for x
    x = 5,146,847.16/3,336.80
  6. Step 6: Final answer
    x = 1,542.45

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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.