Home / 3,172.34-4,378.98-2,581.85

Finding the Fourth Proportional to 3,172.34, 4,378.98 and 2,581.85

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Solution

The fourth proportional to 3,172.34, 4,378.98 and 2,581.85 is: 3,563.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.34 : 4,378.98 = 2,581.85 : x
  2. Step 2: Convert to fraction form
    3,172.34/4,378.98 = 2,581.85/x
  3. Step 3: Cross multiply
    3,172.34x = 4,378.98 × 2,581.85
  4. Step 4: Simplify right side
    3,172.34x = 11,305,847.62
  5. Step 5: Solve for x
    x = 11,305,847.62/3,172.34
  6. Step 6: Final answer
    x = 3,563.89

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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.