Home / 5,900.20-8,138.82-5,112.88

Finding the Fourth Proportional to 5,900.20, 8,138.82 and 5,112.88

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Solution

The fourth proportional to 5,900.20, 8,138.82 and 5,112.88 is: 7,052.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,900.20 : 8,138.82 = 5,112.88 : x
  2. Step 2: Convert to fraction form
    5,900.20/8,138.82 = 5,112.88/x
  3. Step 3: Cross multiply
    5,900.20x = 8,138.82 × 5,112.88
  4. Step 4: Simplify right side
    5,900.20x = 41,612,810.00
  5. Step 5: Solve for x
    x = 41,612,810.00/5,900.20
  6. Step 6: Final answer
    x = 7,052.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.