Home / 2,230.20-3,077.12-1,286.28

Finding the Fourth Proportional to 2,230.20, 3,077.12 and 1,286.28

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Solution

The fourth proportional to 2,230.20, 3,077.12 and 1,286.28 is: 1,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.20 : 3,077.12 = 1,286.28 : x
  2. Step 2: Convert to fraction form
    2,230.20/3,077.12 = 1,286.28/x
  3. Step 3: Cross multiply
    2,230.20x = 3,077.12 × 1,286.28
  4. Step 4: Simplify right side
    2,230.20x = 3,958,037.91
  5. Step 5: Solve for x
    x = 3,958,037.91/2,230.20
  6. Step 6: Final answer
    x = 1,774.75

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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.