Home / 5,177.78-7,147.42-3,081.50

Finding the Fourth Proportional to 5,177.78, 7,147.42 and 3,081.50

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Solution

The fourth proportional to 5,177.78, 7,147.42 and 3,081.50 is: 4,253.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.78 : 7,147.42 = 3,081.50 : x
  2. Step 2: Convert to fraction form
    5,177.78/7,147.42 = 3,081.50/x
  3. Step 3: Cross multiply
    5,177.78x = 7,147.42 × 3,081.50
  4. Step 4: Simplify right side
    5,177.78x = 22,024,774.73
  5. Step 5: Solve for x
    x = 22,024,774.73/5,177.78
  6. Step 6: Final answer
    x = 4,253.71

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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.