Home / 8,366.90-12,540.60-3,430.54

Finding the Fourth Proportional to 8,366.90, 12,540.60 and 3,430.54

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Solution

The fourth proportional to 8,366.90, 12,540.60 and 3,430.54 is: 5,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,366.90 : 12,540.60 = 3,430.54 : x
  2. Step 2: Convert to fraction form
    8,366.90/12,540.60 = 3,430.54/x
  3. Step 3: Cross multiply
    8,366.90x = 12,540.60 × 3,430.54
  4. Step 4: Simplify right side
    8,366.90x = 43,021,029.92
  5. Step 5: Solve for x
    x = 43,021,029.92/8,366.90
  6. Step 6: Final answer
    x = 5,141.81

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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.