Home / 2,813.20-4,216.20-1,349.20

Finding the Fourth Proportional to 2,813.20, 4,216.20 and 1,349.20

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Solution

The fourth proportional to 2,813.20, 4,216.20 and 1,349.20 is: 2,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.20 : 4,216.20 = 1,349.20 : x
  2. Step 2: Convert to fraction form
    2,813.20/4,216.20 = 1,349.20/x
  3. Step 3: Cross multiply
    2,813.20x = 4,216.20 × 1,349.20
  4. Step 4: Simplify right side
    2,813.20x = 5,688,497.04
  5. Step 5: Solve for x
    x = 5,688,497.04/2,813.20
  6. Step 6: Final answer
    x = 2,022.07

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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.