Home / 5,279.50-7,285.98-3,183.76

Finding the Fourth Proportional to 5,279.50, 7,285.98 and 3,183.76

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Solution

The fourth proportional to 5,279.50, 7,285.98 and 3,183.76 is: 4,393.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.50 : 7,285.98 = 3,183.76 : x
  2. Step 2: Convert to fraction form
    5,279.50/7,285.98 = 3,183.76/x
  3. Step 3: Cross multiply
    5,279.50x = 7,285.98 × 3,183.76
  4. Step 4: Simplify right side
    5,279.50x = 23,196,811.68
  5. Step 5: Solve for x
    x = 23,196,811.68/5,279.50
  6. Step 6: Final answer
    x = 4,393.75

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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.