Home / 3,930.21-5,423.94-2,251.17

Finding the Fourth Proportional to 3,930.21, 5,423.94 and 2,251.17

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Solution

The fourth proportional to 3,930.21, 5,423.94 and 2,251.17 is: 3,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.21 : 5,423.94 = 2,251.17 : x
  2. Step 2: Convert to fraction form
    3,930.21/5,423.94 = 2,251.17/x
  3. Step 3: Cross multiply
    3,930.21x = 5,423.94 × 2,251.17
  4. Step 4: Simplify right side
    3,930.21x = 12,210,211.01
  5. Step 5: Solve for x
    x = 12,210,211.01/3,930.21
  6. Step 6: Final answer
    x = 3,106.76

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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.