Home / 5,221.78-7,832.70-3,277.78

Finding the Fourth Proportional to 5,221.78, 7,832.70 and 3,277.78

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Solution

The fourth proportional to 5,221.78, 7,832.70 and 3,277.78 is: 4,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.78 : 7,832.70 = 3,277.78 : x
  2. Step 2: Convert to fraction form
    5,221.78/7,832.70 = 3,277.78/x
  3. Step 3: Cross multiply
    5,221.78x = 7,832.70 × 3,277.78
  4. Step 4: Simplify right side
    5,221.78x = 25,673,867.41
  5. Step 5: Solve for x
    x = 25,673,867.41/5,221.78
  6. Step 6: Final answer
    x = 4,916.69

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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.