Home / 6,163.81-8,508.87-3,928.75

Finding the Fourth Proportional to 6,163.81, 8,508.87 and 3,928.75

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Solution

The fourth proportional to 6,163.81, 8,508.87 and 3,928.75 is: 5,423.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,163.81 : 8,508.87 = 3,928.75 : x
  2. Step 2: Convert to fraction form
    6,163.81/8,508.87 = 3,928.75/x
  3. Step 3: Cross multiply
    6,163.81x = 8,508.87 × 3,928.75
  4. Step 4: Simplify right side
    6,163.81x = 33,429,223.01
  5. Step 5: Solve for x
    x = 33,429,223.01/6,163.81
  6. Step 6: Final answer
    x = 5,423.47

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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.