Home / 8,485.20-12,721.19-4,040.57

Finding the Fourth Proportional to 8,485.20, 12,721.19 and 4,040.57

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Solution

The fourth proportional to 8,485.20, 12,721.19 and 4,040.57 is: 6,057.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.20 : 12,721.19 = 4,040.57 : x
  2. Step 2: Convert to fraction form
    8,485.20/12,721.19 = 4,040.57/x
  3. Step 3: Cross multiply
    8,485.20x = 12,721.19 × 4,040.57
  4. Step 4: Simplify right side
    8,485.20x = 51,400,838.48
  5. Step 5: Solve for x
    x = 51,400,838.48/8,485.20
  6. Step 6: Final answer
    x = 6,057.71

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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.