Home / 3,930.54-5,426.10-2,757.84

Finding the Fourth Proportional to 3,930.54, 5,426.10 and 2,757.84

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Solution

The fourth proportional to 3,930.54, 5,426.10 and 2,757.84 is: 3,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.54 : 5,426.10 = 2,757.84 : x
  2. Step 2: Convert to fraction form
    3,930.54/5,426.10 = 2,757.84/x
  3. Step 3: Cross multiply
    3,930.54x = 5,426.10 × 2,757.84
  4. Step 4: Simplify right side
    3,930.54x = 14,964,315.62
  5. Step 5: Solve for x
    x = 14,964,315.62/3,930.54
  6. Step 6: Final answer
    x = 3,807.19

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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.