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Finding the Fourth Proportional to 8,560.56, 12,831.84 and 4,171.92

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Solution

The fourth proportional to 8,560.56, 12,831.84 and 4,171.92 is: 6,253.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.56 : 12,831.84 = 4,171.92 : x
  2. Step 2: Convert to fraction form
    8,560.56/12,831.84 = 4,171.92/x
  3. Step 3: Cross multiply
    8,560.56x = 12,831.84 × 4,171.92
  4. Step 4: Simplify right side
    8,560.56x = 53,533,409.93
  5. Step 5: Solve for x
    x = 53,533,409.93/8,560.56
  6. Step 6: Final answer
    x = 6,253.49

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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.