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Finding the Fourth Proportional to 2,101.44, 3,152.04 and 1,129.44

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Solution

The fourth proportional to 2,101.44, 3,152.04 and 1,129.44 is: 1,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.44 : 3,152.04 = 1,129.44 : x
  2. Step 2: Convert to fraction form
    2,101.44/3,152.04 = 1,129.44/x
  3. Step 3: Cross multiply
    2,101.44x = 3,152.04 × 1,129.44
  4. Step 4: Simplify right side
    2,101.44x = 3,560,040.06
  5. Step 5: Solve for x
    x = 3,560,040.06/2,101.44
  6. Step 6: Final answer
    x = 1,694.10

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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.