Home / 3,867.44-5,338.32-2,872.40

Finding the Fourth Proportional to 3,867.44, 5,338.32 and 2,872.40

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Solution

The fourth proportional to 3,867.44, 5,338.32 and 2,872.40 is: 3,964.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.44 : 5,338.32 = 2,872.40 : x
  2. Step 2: Convert to fraction form
    3,867.44/5,338.32 = 2,872.40/x
  3. Step 3: Cross multiply
    3,867.44x = 5,338.32 × 2,872.40
  4. Step 4: Simplify right side
    3,867.44x = 15,333,790.37
  5. Step 5: Solve for x
    x = 15,333,790.37/3,867.44
  6. Step 6: Final answer
    x = 3,964.84

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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.