Home / 2,785.28-3,846.60-1,903.36

Finding the Fourth Proportional to 2,785.28, 3,846.60 and 1,903.36

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Solution

The fourth proportional to 2,785.28, 3,846.60 and 1,903.36 is: 2,628.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.28 : 3,846.60 = 1,903.36 : x
  2. Step 2: Convert to fraction form
    2,785.28/3,846.60 = 1,903.36/x
  3. Step 3: Cross multiply
    2,785.28x = 3,846.60 × 1,903.36
  4. Step 4: Simplify right side
    2,785.28x = 7,321,464.58
  5. Step 5: Solve for x
    x = 7,321,464.58/2,785.28
  6. Step 6: Final answer
    x = 2,628.63

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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.