Home / 8,190.10-11,303.31-5,169.61

Finding the Fourth Proportional to 8,190.10, 11,303.31 and 5,169.61

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Solution

The fourth proportional to 8,190.10, 11,303.31 and 5,169.61 is: 7,134.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.10 : 11,303.31 = 5,169.61 : x
  2. Step 2: Convert to fraction form
    8,190.10/11,303.31 = 5,169.61/x
  3. Step 3: Cross multiply
    8,190.10x = 11,303.31 × 5,169.61
  4. Step 4: Simplify right side
    8,190.10x = 58,433,704.41
  5. Step 5: Solve for x
    x = 58,433,704.41/8,190.10
  6. Step 6: Final answer
    x = 7,134.68

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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.