Home / 8,965.16-13,447.81-3,121.77

Finding the Fourth Proportional to 8,965.16, 13,447.81 and 3,121.77

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Solution

The fourth proportional to 8,965.16, 13,447.81 and 3,121.77 is: 4,682.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.16 : 13,447.81 = 3,121.77 : x
  2. Step 2: Convert to fraction form
    8,965.16/13,447.81 = 3,121.77/x
  3. Step 3: Cross multiply
    8,965.16x = 13,447.81 × 3,121.77
  4. Step 4: Simplify right side
    8,965.16x = 41,981,006.60
  5. Step 5: Solve for x
    x = 41,981,006.60/8,965.16
  6. Step 6: Final answer
    x = 4,682.68

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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.