Home / 4,212.81-6,319.31-1,092.86

Finding the Fourth Proportional to 4,212.81, 6,319.31 and 1,092.86

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Solution

The fourth proportional to 4,212.81, 6,319.31 and 1,092.86 is: 1,639.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.81 : 6,319.31 = 1,092.86 : x
  2. Step 2: Convert to fraction form
    4,212.81/6,319.31 = 1,092.86/x
  3. Step 3: Cross multiply
    4,212.81x = 6,319.31 × 1,092.86
  4. Step 4: Simplify right side
    4,212.81x = 6,906,084.07
  5. Step 5: Solve for x
    x = 6,906,084.07/4,212.81
  6. Step 6: Final answer
    x = 1,639.31

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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.