Home / 7,781.12-11,667.84-3,396.68

Finding the Fourth Proportional to 7,781.12, 11,667.84 and 3,396.68

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Solution

The fourth proportional to 7,781.12, 11,667.84 and 3,396.68 is: 5,093.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.12 : 11,667.84 = 3,396.68 : x
  2. Step 2: Convert to fraction form
    7,781.12/11,667.84 = 3,396.68/x
  3. Step 3: Cross multiply
    7,781.12x = 11,667.84 × 3,396.68
  4. Step 4: Simplify right side
    7,781.12x = 39,631,918.77
  5. Step 5: Solve for x
    x = 39,631,918.77/7,781.12
  6. Step 6: Final answer
    x = 5,093.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.