Home / 3,319.30-4,979.55-1,671.70

Finding the Fourth Proportional to 3,319.30, 4,979.55 and 1,671.70

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Solution

The fourth proportional to 3,319.30, 4,979.55 and 1,671.70 is: 2,507.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.30 : 4,979.55 = 1,671.70 : x
  2. Step 2: Convert to fraction form
    3,319.30/4,979.55 = 1,671.70/x
  3. Step 3: Cross multiply
    3,319.30x = 4,979.55 × 1,671.70
  4. Step 4: Simplify right side
    3,319.30x = 8,324,313.74
  5. Step 5: Solve for x
    x = 8,324,313.74/3,319.30
  6. Step 6: Final answer
    x = 2,507.85

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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.