Home / 8,667.21-11,960.67-6,780.72

Finding the Fourth Proportional to 8,667.21, 11,960.67 and 6,780.72

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Solution

The fourth proportional to 8,667.21, 11,960.67 and 6,780.72 is: 9,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.21 : 11,960.67 = 6,780.72 : x
  2. Step 2: Convert to fraction form
    8,667.21/11,960.67 = 6,780.72/x
  3. Step 3: Cross multiply
    8,667.21x = 11,960.67 × 6,780.72
  4. Step 4: Simplify right side
    8,667.21x = 81,101,954.28
  5. Step 5: Solve for x
    x = 81,101,954.28/8,667.21
  6. Step 6: Final answer
    x = 9,357.33

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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.