Home / 2,333.42-3,220.36-1,338.78

Finding the Fourth Proportional to 2,333.42, 3,220.36 and 1,338.78

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Solution

The fourth proportional to 2,333.42, 3,220.36 and 1,338.78 is: 1,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,333.42 : 3,220.36 = 1,338.78 : x
  2. Step 2: Convert to fraction form
    2,333.42/3,220.36 = 1,338.78/x
  3. Step 3: Cross multiply
    2,333.42x = 3,220.36 × 1,338.78
  4. Step 4: Simplify right side
    2,333.42x = 4,311,353.56
  5. Step 5: Solve for x
    x = 4,311,353.56/2,333.42
  6. Step 6: Final answer
    x = 1,847.65

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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.