Home / 5,181.76-7,774.20-2,181.22

Finding the Fourth Proportional to 5,181.76, 7,774.20 and 2,181.22

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Solution

The fourth proportional to 5,181.76, 7,774.20 and 2,181.22 is: 3,272.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.76 : 7,774.20 = 2,181.22 : x
  2. Step 2: Convert to fraction form
    5,181.76/7,774.20 = 2,181.22/x
  3. Step 3: Cross multiply
    5,181.76x = 7,774.20 × 2,181.22
  4. Step 4: Simplify right side
    5,181.76x = 16,957,240.52
  5. Step 5: Solve for x
    x = 16,957,240.52/5,181.76
  6. Step 6: Final answer
    x = 3,272.49

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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.