Home / 2,785.43-3,845.30-2,154.53

Finding the Fourth Proportional to 2,785.43, 3,845.30 and 2,154.53

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Solution

The fourth proportional to 2,785.43, 3,845.30 and 2,154.53 is: 2,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.43 : 3,845.30 = 2,154.53 : x
  2. Step 2: Convert to fraction form
    2,785.43/3,845.30 = 2,154.53/x
  3. Step 3: Cross multiply
    2,785.43x = 3,845.30 × 2,154.53
  4. Step 4: Simplify right side
    2,785.43x = 8,284,784.21
  5. Step 5: Solve for x
    x = 8,284,784.21/2,785.43
  6. Step 6: Final answer
    x = 2,974.33

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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.