Home / 5,138.05-7,707.07-2,176.96

Finding the Fourth Proportional to 5,138.05, 7,707.07 and 2,176.96

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Solution

The fourth proportional to 5,138.05, 7,707.07 and 2,176.96 is: 3,265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.05 : 7,707.07 = 2,176.96 : x
  2. Step 2: Convert to fraction form
    5,138.05/7,707.07 = 2,176.96/x
  3. Step 3: Cross multiply
    5,138.05x = 7,707.07 × 2,176.96
  4. Step 4: Simplify right side
    5,138.05x = 16,777,966.56
  5. Step 5: Solve for x
    x = 16,777,966.56/5,138.05
  6. Step 6: Final answer
    x = 3,265.44

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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.