Home / 8,218.93-11,318.24-7,141.75

Finding the Fourth Proportional to 8,218.93, 11,318.24 and 7,141.75

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Solution

The fourth proportional to 8,218.93, 11,318.24 and 7,141.75 is: 9,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.93 : 11,318.24 = 7,141.75 : x
  2. Step 2: Convert to fraction form
    8,218.93/11,318.24 = 7,141.75/x
  3. Step 3: Cross multiply
    8,218.93x = 11,318.24 × 7,141.75
  4. Step 4: Simplify right side
    8,218.93x = 80,832,004.81
  5. Step 5: Solve for x
    x = 80,832,004.81/8,218.93
  6. Step 6: Final answer
    x = 9,834.86

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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.