Home / 5,438.20-8,157.66-1,928.20

Finding the Fourth Proportional to 5,438.20, 8,157.66 and 1,928.20

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Solution

The fourth proportional to 5,438.20, 8,157.66 and 1,928.20 is: 2,892.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.20 : 8,157.66 = 1,928.20 : x
  2. Step 2: Convert to fraction form
    5,438.20/8,157.66 = 1,928.20/x
  3. Step 3: Cross multiply
    5,438.20x = 8,157.66 × 1,928.20
  4. Step 4: Simplify right side
    5,438.20x = 15,729,600.01
  5. Step 5: Solve for x
    x = 15,729,600.01/5,438.20
  6. Step 6: Final answer
    x = 2,892.43

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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.