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Finding the Fourth Proportional to 2,481.78, 3,722.87 and 1,020.95

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Solution

The fourth proportional to 2,481.78, 3,722.87 and 1,020.95 is: 1,531.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.78 : 3,722.87 = 1,020.95 : x
  2. Step 2: Convert to fraction form
    2,481.78/3,722.87 = 1,020.95/x
  3. Step 3: Cross multiply
    2,481.78x = 3,722.87 × 1,020.95
  4. Step 4: Simplify right side
    2,481.78x = 3,800,848.06
  5. Step 5: Solve for x
    x = 3,800,848.06/2,481.78
  6. Step 6: Final answer
    x = 1,531.50

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1.5x scale

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.