Home / 7,677.05-11,515.57-2,131.79

Finding the Fourth Proportional to 7,677.05, 11,515.57 and 2,131.79

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Solution

The fourth proportional to 7,677.05, 11,515.57 and 2,131.79 is: 3,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,677.05 : 11,515.57 = 2,131.79 : x
  2. Step 2: Convert to fraction form
    7,677.05/11,515.57 = 2,131.79/x
  3. Step 3: Cross multiply
    7,677.05x = 11,515.57 × 2,131.79
  4. Step 4: Simplify right side
    7,677.05x = 24,548,776.97
  5. Step 5: Solve for x
    x = 24,548,776.97/7,677.05
  6. Step 6: Final answer
    x = 3,197.68

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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.