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Finding the Fourth Proportional to 4,989.20, 7,483.20 and 2,067.20

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Solution

The fourth proportional to 4,989.20, 7,483.20 and 2,067.20 is: 3,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.20 : 7,483.20 = 2,067.20 : x
  2. Step 2: Convert to fraction form
    4,989.20/7,483.20 = 2,067.20/x
  3. Step 3: Cross multiply
    4,989.20x = 7,483.20 × 2,067.20
  4. Step 4: Simplify right side
    4,989.20x = 15,469,271.04
  5. Step 5: Solve for x
    x = 15,469,271.04/4,989.20
  6. Step 6: Final answer
    x = 3,100.55

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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.