Home / 2,834.40-4,251.60-1,912.80

Finding the Fourth Proportional to 2,834.40, 4,251.60 and 1,912.80

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Solution

The fourth proportional to 2,834.40, 4,251.60 and 1,912.80 is: 2,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,834.40 : 4,251.60 = 1,912.80 : x
  2. Step 2: Convert to fraction form
    2,834.40/4,251.60 = 1,912.80/x
  3. Step 3: Cross multiply
    2,834.40x = 4,251.60 × 1,912.80
  4. Step 4: Simplify right side
    2,834.40x = 8,132,460.48
  5. Step 5: Solve for x
    x = 8,132,460.48/2,834.40
  6. Step 6: Final answer
    x = 2,869.20

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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.