Home / 8,709.22-12,021.30-5,174.56

Finding the Fourth Proportional to 8,709.22, 12,021.30 and 5,174.56

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Solution

The fourth proportional to 8,709.22, 12,021.30 and 5,174.56 is: 7,142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.22 : 12,021.30 = 5,174.56 : x
  2. Step 2: Convert to fraction form
    8,709.22/12,021.30 = 5,174.56/x
  3. Step 3: Cross multiply
    8,709.22x = 12,021.30 × 5,174.56
  4. Step 4: Simplify right side
    8,709.22x = 62,204,938.13
  5. Step 5: Solve for x
    x = 62,204,938.13/8,709.22
  6. Step 6: Final answer
    x = 7,142.42

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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.