Home / 3,939.84-5,438.88-2,704.32

Finding the Fourth Proportional to 3,939.84, 5,438.88 and 2,704.32

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Solution

The fourth proportional to 3,939.84, 5,438.88 and 2,704.32 is: 3,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.84 : 5,438.88 = 2,704.32 : x
  2. Step 2: Convert to fraction form
    3,939.84/5,438.88 = 2,704.32/x
  3. Step 3: Cross multiply
    3,939.84x = 5,438.88 × 2,704.32
  4. Step 4: Simplify right side
    3,939.84x = 14,708,471.96
  5. Step 5: Solve for x
    x = 14,708,471.96/3,939.84
  6. Step 6: Final answer
    x = 3,733.27

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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.