Home / 5,108.85-7,665.17-2,189.43

Finding the Fourth Proportional to 5,108.85, 7,665.17 and 2,189.43

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Solution

The fourth proportional to 5,108.85, 7,665.17 and 2,189.43 is: 3,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.85 : 7,665.17 = 2,189.43 : x
  2. Step 2: Convert to fraction form
    5,108.85/7,665.17 = 2,189.43/x
  3. Step 3: Cross multiply
    5,108.85x = 7,665.17 × 2,189.43
  4. Step 4: Simplify right side
    5,108.85x = 16,782,342.21
  5. Step 5: Solve for x
    x = 16,782,342.21/5,108.85
  6. Step 6: Final answer
    x = 3,284.95

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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.