Home / 4,815.20-7,219.20-3,080.48

Finding the Fourth Proportional to 4,815.20, 7,219.20 and 3,080.48

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Solution

The fourth proportional to 4,815.20, 7,219.20 and 3,080.48 is: 4,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.20 : 7,219.20 = 3,080.48 : x
  2. Step 2: Convert to fraction form
    4,815.20/7,219.20 = 3,080.48/x
  3. Step 3: Cross multiply
    4,815.20x = 7,219.20 × 3,080.48
  4. Step 4: Simplify right side
    4,815.20x = 22,238,601.22
  5. Step 5: Solve for x
    x = 22,238,601.22/4,815.20
  6. Step 6: Final answer
    x = 4,618.42

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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.