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Finding the Fourth Proportional to 2,753.84, 4,129.50 and 1,021.25

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Solution

The fourth proportional to 2,753.84, 4,129.50 and 1,021.25 is: 1,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.84 : 4,129.50 = 1,021.25 : x
  2. Step 2: Convert to fraction form
    2,753.84/4,129.50 = 1,021.25/x
  3. Step 3: Cross multiply
    2,753.84x = 4,129.50 × 1,021.25
  4. Step 4: Simplify right side
    2,753.84x = 4,217,251.88
  5. Step 5: Solve for x
    x = 4,217,251.88/2,753.84
  6. Step 6: Final answer
    x = 1,531.41

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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.