Home / 8,634.42-11,917.38-5,645.34

Finding the Fourth Proportional to 8,634.42, 11,917.38 and 5,645.34

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Solution

The fourth proportional to 8,634.42, 11,917.38 and 5,645.34 is: 7,791.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.42 : 11,917.38 = 5,645.34 : x
  2. Step 2: Convert to fraction form
    8,634.42/11,917.38 = 5,645.34/x
  3. Step 3: Cross multiply
    8,634.42x = 11,917.38 × 5,645.34
  4. Step 4: Simplify right side
    8,634.42x = 67,277,662.01
  5. Step 5: Solve for x
    x = 67,277,662.01/8,634.42
  6. Step 6: Final answer
    x = 7,791.80

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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.