Home / 2,219.64-3,330-1,246.38

Finding the Fourth Proportional to 2,219.64, 3,330 and 1,246.38

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Solution

The fourth proportional to 2,219.64, 3,330 and 1,246.38 is: 1,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.64 : 3,330 = 1,246.38 : x
  2. Step 2: Convert to fraction form
    2,219.64/3,330 = 1,246.38/x
  3. Step 3: Cross multiply
    2,219.64x = 3,330 × 1,246.38
  4. Step 4: Simplify right side
    2,219.64x = 4,150,445.40
  5. Step 5: Solve for x
    x = 4,150,445.40/2,219.64
  6. Step 6: Final answer
    x = 1,869.87

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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.