Home / 8,912.20-13,368.30-6,838.60

Finding the Fourth Proportional to 8,912.20, 13,368.30 and 6,838.60

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Solution

The fourth proportional to 8,912.20, 13,368.30 and 6,838.60 is: 10,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.20 : 13,368.30 = 6,838.60 : x
  2. Step 2: Convert to fraction form
    8,912.20/13,368.30 = 6,838.60/x
  3. Step 3: Cross multiply
    8,912.20x = 13,368.30 × 6,838.60
  4. Step 4: Simplify right side
    8,912.20x = 91,420,456.38
  5. Step 5: Solve for x
    x = 91,420,456.38/8,912.20
  6. Step 6: Final answer
    x = 10,257.90

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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.