Home / 8,309.22-12,434.57-5,190.69

Finding the Fourth Proportional to 8,309.22, 12,434.57 and 5,190.69

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Solution

The fourth proportional to 8,309.22, 12,434.57 and 5,190.69 is: 7,767.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.22 : 12,434.57 = 5,190.69 : x
  2. Step 2: Convert to fraction form
    8,309.22/12,434.57 = 5,190.69/x
  3. Step 3: Cross multiply
    8,309.22x = 12,434.57 × 5,190.69
  4. Step 4: Simplify right side
    8,309.22x = 64,543,991.66
  5. Step 5: Solve for x
    x = 64,543,991.66/8,309.22
  6. Step 6: Final answer
    x = 7,767.76

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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.