Home / 8,739.20-13,105.02-3,190.70

Finding the Fourth Proportional to 8,739.20, 13,105.02 and 3,190.70

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Solution

The fourth proportional to 8,739.20, 13,105.02 and 3,190.70 is: 4,784.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.20 : 13,105.02 = 3,190.70 : x
  2. Step 2: Convert to fraction form
    8,739.20/13,105.02 = 3,190.70/x
  3. Step 3: Cross multiply
    8,739.20x = 13,105.02 × 3,190.70
  4. Step 4: Simplify right side
    8,739.20x = 41,814,187.31
  5. Step 5: Solve for x
    x = 41,814,187.31/8,739.20
  6. Step 6: Final answer
    x = 4,784.67

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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.