Home / 5,147.20-7,716.12-2,679.12

Finding the Fourth Proportional to 5,147.20, 7,716.12 and 2,679.12

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Solution

The fourth proportional to 5,147.20, 7,716.12 and 2,679.12 is: 4,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.20 : 7,716.12 = 2,679.12 : x
  2. Step 2: Convert to fraction form
    5,147.20/7,716.12 = 2,679.12/x
  3. Step 3: Cross multiply
    5,147.20x = 7,716.12 × 2,679.12
  4. Step 4: Simplify right side
    5,147.20x = 20,672,411.41
  5. Step 5: Solve for x
    x = 20,672,411.41/5,147.20
  6. Step 6: Final answer
    x = 4,016.24

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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.