Home / 5,106.72-7,654.62-2,640.88

Finding the Fourth Proportional to 5,106.72, 7,654.62 and 2,640.88

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Solution

The fourth proportional to 5,106.72, 7,654.62 and 2,640.88 is: 3,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.72 : 7,654.62 = 2,640.88 : x
  2. Step 2: Convert to fraction form
    5,106.72/7,654.62 = 2,640.88/x
  3. Step 3: Cross multiply
    5,106.72x = 7,654.62 × 2,640.88
  4. Step 4: Simplify right side
    5,106.72x = 20,214,932.87
  5. Step 5: Solve for x
    x = 20,214,932.87/5,106.72
  6. Step 6: Final answer
    x = 3,958.50

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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.