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Finding the Fourth Proportional to 1,805.76, 2,709.99 and 1,156.41

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Solution

The fourth proportional to 1,805.76, 2,709.99 and 1,156.41 is: 1,735.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.76 : 2,709.99 = 1,156.41 : x
  2. Step 2: Convert to fraction form
    1,805.76/2,709.99 = 1,156.41/x
  3. Step 3: Cross multiply
    1,805.76x = 2,709.99 × 1,156.41
  4. Step 4: Simplify right side
    1,805.76x = 3,133,859.54
  5. Step 5: Solve for x
    x = 3,133,859.54/1,805.76
  6. Step 6: Final answer
    x = 1,735.48

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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.