Home / 2,289.10-3,429.60-1,940.80

Finding the Fourth Proportional to 2,289.10, 3,429.60 and 1,940.80

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Solution

The fourth proportional to 2,289.10, 3,429.60 and 1,940.80 is: 2,907.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.10 : 3,429.60 = 1,940.80 : x
  2. Step 2: Convert to fraction form
    2,289.10/3,429.60 = 1,940.80/x
  3. Step 3: Cross multiply
    2,289.10x = 3,429.60 × 1,940.80
  4. Step 4: Simplify right side
    2,289.10x = 6,656,167.68
  5. Step 5: Solve for x
    x = 6,656,167.68/2,289.10
  6. Step 6: Final answer
    x = 2,907.77

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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.