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Finding the Fourth Proportional to 2,481.50, 3,425.28 and 1,550

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Solution

The fourth proportional to 2,481.50, 3,425.28 and 1,550 is: 2,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.50 : 3,425.28 = 1,550 : x
  2. Step 2: Convert to fraction form
    2,481.50/3,425.28 = 1,550/x
  3. Step 3: Cross multiply
    2,481.50x = 3,425.28 × 1,550
  4. Step 4: Simplify right side
    2,481.50x = 5,309,184
  5. Step 5: Solve for x
    x = 5,309,184/2,481.50
  6. Step 6: Final answer
    x = 2,139.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.