Home / 5,183.48-7,775.70-1,721

Finding the Fourth Proportional to 5,183.48, 7,775.70 and 1,721

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Solution

The fourth proportional to 5,183.48, 7,775.70 and 1,721 is: 2,581.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,183.48 : 7,775.70 = 1,721 : x
  2. Step 2: Convert to fraction form
    5,183.48/7,775.70 = 1,721/x
  3. Step 3: Cross multiply
    5,183.48x = 7,775.70 × 1,721
  4. Step 4: Simplify right side
    5,183.48x = 13,381,979.70
  5. Step 5: Solve for x
    x = 13,381,979.70/5,183.48
  6. Step 6: Final answer
    x = 2,581.66

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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.