Home / 2,236.80-3,086.64-1,305.12

Finding the Fourth Proportional to 2,236.80, 3,086.64 and 1,305.12

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Solution

The fourth proportional to 2,236.80, 3,086.64 and 1,305.12 is: 1,800.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.80 : 3,086.64 = 1,305.12 : x
  2. Step 2: Convert to fraction form
    2,236.80/3,086.64 = 1,305.12/x
  3. Step 3: Cross multiply
    2,236.80x = 3,086.64 × 1,305.12
  4. Step 4: Simplify right side
    2,236.80x = 4,028,435.60
  5. Step 5: Solve for x
    x = 4,028,435.60/2,236.80
  6. Step 6: Final answer
    x = 1,800.98

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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.