Home / 2,789.17-4,183.76-2,087.11

Finding the Fourth Proportional to 2,789.17, 4,183.76 and 2,087.11

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Solution

The fourth proportional to 2,789.17, 4,183.76 and 2,087.11 is: 3,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.17 : 4,183.76 = 2,087.11 : x
  2. Step 2: Convert to fraction form
    2,789.17/4,183.76 = 2,087.11/x
  3. Step 3: Cross multiply
    2,789.17x = 4,183.76 × 2,087.11
  4. Step 4: Simplify right side
    2,789.17x = 8,731,971.91
  5. Step 5: Solve for x
    x = 8,731,971.91/2,789.17
  6. Step 6: Final answer
    x = 3,130.67

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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.