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Finding the Fourth Proportional to 3,234.28, 4,848 and 1,386.28

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Solution

The fourth proportional to 3,234.28, 4,848 and 1,386.28 is: 2,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,234.28 : 4,848 = 1,386.28 : x
  2. Step 2: Convert to fraction form
    3,234.28/4,848 = 1,386.28/x
  3. Step 3: Cross multiply
    3,234.28x = 4,848 × 1,386.28
  4. Step 4: Simplify right side
    3,234.28x = 6,720,685.44
  5. Step 5: Solve for x
    x = 6,720,685.44/3,234.28
  6. Step 6: Final answer
    x = 2,077.95

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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.