Home / 2,834.20-4,255.35-2,145.70

Finding the Fourth Proportional to 2,834.20, 4,255.35 and 2,145.70

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Solution

The fourth proportional to 2,834.20, 4,255.35 and 2,145.70 is: 3,221.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,834.20 : 4,255.35 = 2,145.70 : x
  2. Step 2: Convert to fraction form
    2,834.20/4,255.35 = 2,145.70/x
  3. Step 3: Cross multiply
    2,834.20x = 4,255.35 × 2,145.70
  4. Step 4: Simplify right side
    2,834.20x = 9,130,704.50
  5. Step 5: Solve for x
    x = 9,130,704.50/2,834.20
  6. Step 6: Final answer
    x = 3,221.62

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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.