Home / 5,114.88-7,672.30-2,191.28

Finding the Fourth Proportional to 5,114.88, 7,672.30 and 2,191.28

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Solution

The fourth proportional to 5,114.88, 7,672.30 and 2,191.28 is: 3,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.88 : 7,672.30 = 2,191.28 : x
  2. Step 2: Convert to fraction form
    5,114.88/7,672.30 = 2,191.28/x
  3. Step 3: Cross multiply
    5,114.88x = 7,672.30 × 2,191.28
  4. Step 4: Simplify right side
    5,114.88x = 16,812,157.54
  5. Step 5: Solve for x
    x = 16,812,157.54/5,114.88
  6. Step 6: Final answer
    x = 3,286.91

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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.