Home / 5,486.31-8,228.73-3,138.69

Finding the Fourth Proportional to 5,486.31, 8,228.73 and 3,138.69

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Solution

The fourth proportional to 5,486.31, 8,228.73 and 3,138.69 is: 4,707.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.31 : 8,228.73 = 3,138.69 : x
  2. Step 2: Convert to fraction form
    5,486.31/8,228.73 = 3,138.69/x
  3. Step 3: Cross multiply
    5,486.31x = 8,228.73 × 3,138.69
  4. Step 4: Simplify right side
    5,486.31x = 25,827,432.56
  5. Step 5: Solve for x
    x = 25,827,432.56/5,486.31
  6. Step 6: Final answer
    x = 4,707.61

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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.