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Finding the Fourth Proportional to 8,483.69, 12,726.61 and 3,220.54

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Solution

The fourth proportional to 8,483.69, 12,726.61 and 3,220.54 is: 4,831.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,483.69 : 12,726.61 = 3,220.54 : x
  2. Step 2: Convert to fraction form
    8,483.69/12,726.61 = 3,220.54/x
  3. Step 3: Cross multiply
    8,483.69x = 12,726.61 × 3,220.54
  4. Step 4: Simplify right side
    8,483.69x = 40,986,556.57
  5. Step 5: Solve for x
    x = 40,986,556.57/8,483.69
  6. Step 6: Final answer
    x = 4,831.22

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1.5x scale

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.