Home / 9,224.75-12,729.10-5,190.80

Finding the Fourth Proportional to 9,224.75, 12,729.10 and 5,190.80

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Solution

The fourth proportional to 9,224.75, 12,729.10 and 5,190.80 is: 7,162.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,224.75 : 12,729.10 = 5,190.80 : x
  2. Step 2: Convert to fraction form
    9,224.75/12,729.10 = 5,190.80/x
  3. Step 3: Cross multiply
    9,224.75x = 12,729.10 × 5,190.80
  4. Step 4: Simplify right side
    9,224.75x = 66,074,145.39
  5. Step 5: Solve for x
    x = 66,074,145.39/9,224.75
  6. Step 6: Final answer
    x = 7,162.71

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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.