Home / 2,760.67-3,811.43-1,899.79

Finding the Fourth Proportional to 2,760.67, 3,811.43 and 1,899.79

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Solution

The fourth proportional to 2,760.67, 3,811.43 and 1,899.79 is: 2,622.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.67 : 3,811.43 = 1,899.79 : x
  2. Step 2: Convert to fraction form
    2,760.67/3,811.43 = 1,899.79/x
  3. Step 3: Cross multiply
    2,760.67x = 3,811.43 × 1,899.79
  4. Step 4: Simplify right side
    2,760.67x = 7,240,916.60
  5. Step 5: Solve for x
    x = 7,240,916.60/2,760.67
  6. Step 6: Final answer
    x = 2,622.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.