Home / 3,918.44-5,406.78-2,591.43

Finding the Fourth Proportional to 3,918.44, 5,406.78 and 2,591.43

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Solution

The fourth proportional to 3,918.44, 5,406.78 and 2,591.43 is: 3,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.44 : 5,406.78 = 2,591.43 : x
  2. Step 2: Convert to fraction form
    3,918.44/5,406.78 = 2,591.43/x
  3. Step 3: Cross multiply
    3,918.44x = 5,406.78 × 2,591.43
  4. Step 4: Simplify right side
    3,918.44x = 14,011,291.90
  5. Step 5: Solve for x
    x = 14,011,291.90/3,918.44
  6. Step 6: Final answer
    x = 3,575.73

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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.