Home / 3,219.20-4,829.40-1,028.55

Finding the Fourth Proportional to 3,219.20, 4,829.40 and 1,028.55

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Solution

The fourth proportional to 3,219.20, 4,829.40 and 1,028.55 is: 1,543.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.20 : 4,829.40 = 1,028.55 : x
  2. Step 2: Convert to fraction form
    3,219.20/4,829.40 = 1,028.55/x
  3. Step 3: Cross multiply
    3,219.20x = 4,829.40 × 1,028.55
  4. Step 4: Simplify right side
    3,219.20x = 4,967,279.37
  5. Step 5: Solve for x
    x = 4,967,279.37/3,219.20
  6. Step 6: Final answer
    x = 1,543.02

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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.