Home / 2,228.30-3,338.40-1,815.20

Finding the Fourth Proportional to 2,228.30, 3,338.40 and 1,815.20

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Solution

The fourth proportional to 2,228.30, 3,338.40 and 1,815.20 is: 2,719.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.30 : 3,338.40 = 1,815.20 : x
  2. Step 2: Convert to fraction form
    2,228.30/3,338.40 = 1,815.20/x
  3. Step 3: Cross multiply
    2,228.30x = 3,338.40 × 1,815.20
  4. Step 4: Simplify right side
    2,228.30x = 6,059,863.68
  5. Step 5: Solve for x
    x = 6,059,863.68/2,228.30
  6. Step 6: Final answer
    x = 2,719.50

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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.