Home / 6,921.60-10,380.78-2,536.68

Finding the Fourth Proportional to 6,921.60, 10,380.78 and 2,536.68

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Solution

The fourth proportional to 6,921.60, 10,380.78 and 2,536.68 is: 3,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.60 : 10,380.78 = 2,536.68 : x
  2. Step 2: Convert to fraction form
    6,921.60/10,380.78 = 2,536.68/x
  3. Step 3: Cross multiply
    6,921.60x = 10,380.78 × 2,536.68
  4. Step 4: Simplify right side
    6,921.60x = 26,332,717.01
  5. Step 5: Solve for x
    x = 26,332,717.01/6,921.60
  6. Step 6: Final answer
    x = 3,804.43

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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.