Home / 2,771.54-3,820.68-2,181.05

Finding the Fourth Proportional to 2,771.54, 3,820.68 and 2,181.05

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Solution

The fourth proportional to 2,771.54, 3,820.68 and 2,181.05 is: 3,006.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.54 : 3,820.68 = 2,181.05 : x
  2. Step 2: Convert to fraction form
    2,771.54/3,820.68 = 2,181.05/x
  3. Step 3: Cross multiply
    2,771.54x = 3,820.68 × 2,181.05
  4. Step 4: Simplify right side
    2,771.54x = 8,333,094.11
  5. Step 5: Solve for x
    x = 8,333,094.11/2,771.54
  6. Step 6: Final answer
    x = 3,006.67

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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.