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Finding the Fourth Proportional to 1,721.76, 2,579.03 and 1,102.31

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Solution

The fourth proportional to 1,721.76, 2,579.03 and 1,102.31 is: 1,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.76 : 2,579.03 = 1,102.31 : x
  2. Step 2: Convert to fraction form
    1,721.76/2,579.03 = 1,102.31/x
  3. Step 3: Cross multiply
    1,721.76x = 2,579.03 × 1,102.31
  4. Step 4: Simplify right side
    1,721.76x = 2,842,890.56
  5. Step 5: Solve for x
    x = 2,842,890.56/1,721.76
  6. Step 6: Final answer
    x = 1,651.15

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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.