Home / 2,228.28-3,074.82-1,284.24

Finding the Fourth Proportional to 2,228.28, 3,074.82 and 1,284.24

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Solution

The fourth proportional to 2,228.28, 3,074.82 and 1,284.24 is: 1,772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.28 : 3,074.82 = 1,284.24 : x
  2. Step 2: Convert to fraction form
    2,228.28/3,074.82 = 1,284.24/x
  3. Step 3: Cross multiply
    2,228.28x = 3,074.82 × 1,284.24
  4. Step 4: Simplify right side
    2,228.28x = 3,948,806.84
  5. Step 5: Solve for x
    x = 3,948,806.84/2,228.28
  6. Step 6: Final answer
    x = 1,772.13

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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.