Home / 5,286.37-7,929.56-2,166.43

Finding the Fourth Proportional to 5,286.37, 7,929.56 and 2,166.43

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Solution

The fourth proportional to 5,286.37, 7,929.56 and 2,166.43 is: 3,249.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.37 : 7,929.56 = 2,166.43 : x
  2. Step 2: Convert to fraction form
    5,286.37/7,929.56 = 2,166.43/x
  3. Step 3: Cross multiply
    5,286.37x = 7,929.56 × 2,166.43
  4. Step 4: Simplify right side
    5,286.37x = 17,178,836.67
  5. Step 5: Solve for x
    x = 17,178,836.67/5,286.37
  6. Step 6: Final answer
    x = 3,249.65

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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.