Home / 3,086.92-4,631.82-1,139.32

Finding the Fourth Proportional to 3,086.92, 4,631.82 and 1,139.32

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Solution

The fourth proportional to 3,086.92, 4,631.82 and 1,139.32 is: 1,709.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.92 : 4,631.82 = 1,139.32 : x
  2. Step 2: Convert to fraction form
    3,086.92/4,631.82 = 1,139.32/x
  3. Step 3: Cross multiply
    3,086.92x = 4,631.82 × 1,139.32
  4. Step 4: Simplify right side
    3,086.92x = 5,277,125.16
  5. Step 5: Solve for x
    x = 5,277,125.16/3,086.92
  6. Step 6: Final answer
    x = 1,709.51

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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.