Home / 3,178.28-4,765.57-1,228.21

Finding the Fourth Proportional to 3,178.28, 4,765.57 and 1,228.21

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Solution

The fourth proportional to 3,178.28, 4,765.57 and 1,228.21 is: 1,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.28 : 4,765.57 = 1,228.21 : x
  2. Step 2: Convert to fraction form
    3,178.28/4,765.57 = 1,228.21/x
  3. Step 3: Cross multiply
    3,178.28x = 4,765.57 × 1,228.21
  4. Step 4: Simplify right side
    3,178.28x = 5,853,120.73
  5. Step 5: Solve for x
    x = 5,853,120.73/3,178.28
  6. Step 6: Final answer
    x = 1,841.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.