Home / 5,127.78-7,076.25-3,031.50

Finding the Fourth Proportional to 5,127.78, 7,076.25 and 3,031.50

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Solution

The fourth proportional to 5,127.78, 7,076.25 and 3,031.50 is: 4,183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.78 : 7,076.25 = 3,031.50 : x
  2. Step 2: Convert to fraction form
    5,127.78/7,076.25 = 3,031.50/x
  3. Step 3: Cross multiply
    5,127.78x = 7,076.25 × 3,031.50
  4. Step 4: Simplify right side
    5,127.78x = 21,451,651.88
  5. Step 5: Solve for x
    x = 21,451,651.88/5,127.78
  6. Step 6: Final answer
    x = 4,183.42

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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.