Home / 3,321.90-4,977.45-2,771.10

Finding the Fourth Proportional to 3,321.90, 4,977.45 and 2,771.10

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Solution

The fourth proportional to 3,321.90, 4,977.45 and 2,771.10 is: 4,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.90 : 4,977.45 = 2,771.10 : x
  2. Step 2: Convert to fraction form
    3,321.90/4,977.45 = 2,771.10/x
  3. Step 3: Cross multiply
    3,321.90x = 4,977.45 × 2,771.10
  4. Step 4: Simplify right side
    3,321.90x = 13,793,011.70
  5. Step 5: Solve for x
    x = 13,793,011.70/3,321.90
  6. Step 6: Final answer
    x = 4,152.15

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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.