Home / 3,319.70-4,579.67-1,991.12

Finding the Fourth Proportional to 3,319.70, 4,579.67 and 1,991.12

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Solution

The fourth proportional to 3,319.70, 4,579.67 and 1,991.12 is: 2,746.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.70 : 4,579.67 = 1,991.12 : x
  2. Step 2: Convert to fraction form
    3,319.70/4,579.67 = 1,991.12/x
  3. Step 3: Cross multiply
    3,319.70x = 4,579.67 × 1,991.12
  4. Step 4: Simplify right side
    3,319.70x = 9,118,662.57
  5. Step 5: Solve for x
    x = 9,118,662.57/3,319.70
  6. Step 6: Final answer
    x = 2,746.83

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Similar ratio
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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.