Home / 5,286.11-7,280.12-4,086.68

Finding the Fourth Proportional to 5,286.11, 7,280.12 and 4,086.68

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Solution

The fourth proportional to 5,286.11, 7,280.12 and 4,086.68 is: 5,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.11 : 7,280.12 = 4,086.68 : x
  2. Step 2: Convert to fraction form
    5,286.11/7,280.12 = 4,086.68/x
  3. Step 3: Cross multiply
    5,286.11x = 7,280.12 × 4,086.68
  4. Step 4: Simplify right side
    5,286.11x = 29,751,520.80
  5. Step 5: Solve for x
    x = 29,751,520.80/5,286.11
  6. Step 6: Final answer
    x = 5,628.24

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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.