Home / 2,784.40-4,176.60-2,581.90

Finding the Fourth Proportional to 2,784.40, 4,176.60 and 2,581.90

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Solution

The fourth proportional to 2,784.40, 4,176.60 and 2,581.90 is: 3,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.40 : 4,176.60 = 2,581.90 : x
  2. Step 2: Convert to fraction form
    2,784.40/4,176.60 = 2,581.90/x
  3. Step 3: Cross multiply
    2,784.40x = 4,176.60 × 2,581.90
  4. Step 4: Simplify right side
    2,784.40x = 10,783,563.54
  5. Step 5: Solve for x
    x = 10,783,563.54/2,784.40
  6. Step 6: Final answer
    x = 3,872.85

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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.