Home / 2,258.75-3,388.40-1,380.85

Finding the Fourth Proportional to 2,258.75, 3,388.40 and 1,380.85

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Solution

The fourth proportional to 2,258.75, 3,388.40 and 1,380.85 is: 2,071.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,258.75 : 3,388.40 = 1,380.85 : x
  2. Step 2: Convert to fraction form
    2,258.75/3,388.40 = 1,380.85/x
  3. Step 3: Cross multiply
    2,258.75x = 3,388.40 × 1,380.85
  4. Step 4: Simplify right side
    2,258.75x = 4,678,861.94
  5. Step 5: Solve for x
    x = 4,678,861.94/2,258.75
  6. Step 6: Final answer
    x = 2,071.44

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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.