Home / 3,929.04-5,410.80-3,229.20

Finding the Fourth Proportional to 3,929.04, 5,410.80 and 3,229.20

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Solution

The fourth proportional to 3,929.04, 5,410.80 and 3,229.20 is: 4,447.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.04 : 5,410.80 = 3,229.20 : x
  2. Step 2: Convert to fraction form
    3,929.04/5,410.80 = 3,229.20/x
  3. Step 3: Cross multiply
    3,929.04x = 5,410.80 × 3,229.20
  4. Step 4: Simplify right side
    3,929.04x = 17,472,555.36
  5. Step 5: Solve for x
    x = 17,472,555.36/3,929.04
  6. Step 6: Final answer
    x = 4,447.03

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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.