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Finding the Fourth Proportional to 2,181.28, 3,271.86 and 537.82

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Solution

The fourth proportional to 2,181.28, 3,271.86 and 537.82 is: 806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.28 : 3,271.86 = 537.82 : x
  2. Step 2: Convert to fraction form
    2,181.28/3,271.86 = 537.82/x
  3. Step 3: Cross multiply
    2,181.28x = 3,271.86 × 537.82
  4. Step 4: Simplify right side
    2,181.28x = 1,759,671.75
  5. Step 5: Solve for x
    x = 1,759,671.75/2,181.28
  6. Step 6: Final answer
    x = 806.72

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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.