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Finding the Fourth Proportional to 8,667, 11,955.60 and 5,311.44

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Solution

The fourth proportional to 8,667, 11,955.60 and 5,311.44 is: 7,326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667 : 11,955.60 = 5,311.44 : x
  2. Step 2: Convert to fraction form
    8,667/11,955.60 = 5,311.44/x
  3. Step 3: Cross multiply
    8,667x = 11,955.60 × 5,311.44
  4. Step 4: Simplify right side
    8,667x = 63,501,452.06
  5. Step 5: Solve for x
    x = 63,501,452.06/8,667
  6. Step 6: Final answer
    x = 7,326.81

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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.