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Finding the Fourth Proportional to 8,153.56, 12,227.30 and 3,221.56

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Solution

The fourth proportional to 8,153.56, 12,227.30 and 3,221.56 is: 4,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,153.56 : 12,227.30 = 3,221.56 : x
  2. Step 2: Convert to fraction form
    8,153.56/12,227.30 = 3,221.56/x
  3. Step 3: Cross multiply
    8,153.56x = 12,227.30 × 3,221.56
  4. Step 4: Simplify right side
    8,153.56x = 39,390,980.59
  5. Step 5: Solve for x
    x = 39,390,980.59/8,153.56
  6. Step 6: Final answer
    x = 4,831.14

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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.