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Finding the Fourth Proportional to 9,200.40, 13,800.60 and 5,919.90

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Solution

The fourth proportional to 9,200.40, 13,800.60 and 5,919.90 is: 8,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,200.40 : 13,800.60 = 5,919.90 : x
  2. Step 2: Convert to fraction form
    9,200.40/13,800.60 = 5,919.90/x
  3. Step 3: Cross multiply
    9,200.40x = 13,800.60 × 5,919.90
  4. Step 4: Simplify right side
    9,200.40x = 81,698,171.94
  5. Step 5: Solve for x
    x = 81,698,171.94/9,200.40
  6. Step 6: Final answer
    x = 8,879.85

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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.