Home / 3,900.62-5,384.86-2,722.88

Finding the Fourth Proportional to 3,900.62, 5,384.86 and 2,722.88

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Solution

The fourth proportional to 3,900.62, 5,384.86 and 2,722.88 is: 3,758.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.62 : 5,384.86 = 2,722.88 : x
  2. Step 2: Convert to fraction form
    3,900.62/5,384.86 = 2,722.88/x
  3. Step 3: Cross multiply
    3,900.62x = 5,384.86 × 2,722.88
  4. Step 4: Simplify right side
    3,900.62x = 14,662,327.60
  5. Step 5: Solve for x
    x = 14,662,327.60/3,900.62
  6. Step 6: Final answer
    x = 3,758.97

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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.