Home / 8,128.41-11,222.13-5,300.71

Finding the Fourth Proportional to 8,128.41, 11,222.13 and 5,300.71

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Solution

The fourth proportional to 8,128.41, 11,222.13 and 5,300.71 is: 7,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.41 : 11,222.13 = 5,300.71 : x
  2. Step 2: Convert to fraction form
    8,128.41/11,222.13 = 5,300.71/x
  3. Step 3: Cross multiply
    8,128.41x = 11,222.13 × 5,300.71
  4. Step 4: Simplify right side
    8,128.41x = 59,485,183.77
  5. Step 5: Solve for x
    x = 59,485,183.77/8,128.41
  6. Step 6: Final answer
    x = 7,318.19

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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.