Home / 3,330.20-4,995.30-2,919.80

Finding the Fourth Proportional to 3,330.20, 4,995.30 and 2,919.80

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Solution

The fourth proportional to 3,330.20, 4,995.30 and 2,919.80 is: 4,379.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.20 : 4,995.30 = 2,919.80 : x
  2. Step 2: Convert to fraction form
    3,330.20/4,995.30 = 2,919.80/x
  3. Step 3: Cross multiply
    3,330.20x = 4,995.30 × 2,919.80
  4. Step 4: Simplify right side
    3,330.20x = 14,585,276.94
  5. Step 5: Solve for x
    x = 14,585,276.94/3,330.20
  6. Step 6: Final answer
    x = 4,379.70

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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.