Home / 3,930.09-5,889.92-2,885.20

Finding the Fourth Proportional to 3,930.09, 5,889.92 and 2,885.20

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Solution

The fourth proportional to 3,930.09, 5,889.92 and 2,885.20 is: 4,323.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.09 : 5,889.92 = 2,885.20 : x
  2. Step 2: Convert to fraction form
    3,930.09/5,889.92 = 2,885.20/x
  3. Step 3: Cross multiply
    3,930.09x = 5,889.92 × 2,885.20
  4. Step 4: Simplify right side
    3,930.09x = 16,993,617.39
  5. Step 5: Solve for x
    x = 16,993,617.39/3,930.09
  6. Step 6: Final answer
    x = 4,323.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.