Home / 5,422.21-8,134.16-1,912.68

Finding the Fourth Proportional to 5,422.21, 8,134.16 and 1,912.68

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Solution

The fourth proportional to 5,422.21, 8,134.16 and 1,912.68 is: 2,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.21 : 8,134.16 = 1,912.68 : x
  2. Step 2: Convert to fraction form
    5,422.21/8,134.16 = 1,912.68/x
  3. Step 3: Cross multiply
    5,422.21x = 8,134.16 × 1,912.68
  4. Step 4: Simplify right side
    5,422.21x = 15,558,035.59
  5. Step 5: Solve for x
    x = 15,558,035.59/5,422.21
  6. Step 6: Final answer
    x = 2,869.32

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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.