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Finding the Fourth Proportional to 8,201.86, 12,304.74 and 2,655.20

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Solution

The fourth proportional to 8,201.86, 12,304.74 and 2,655.20 is: 3,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,201.86 : 12,304.74 = 2,655.20 : x
  2. Step 2: Convert to fraction form
    8,201.86/12,304.74 = 2,655.20/x
  3. Step 3: Cross multiply
    8,201.86x = 12,304.74 × 2,655.20
  4. Step 4: Simplify right side
    8,201.86x = 32,671,532.37
  5. Step 5: Solve for x
    x = 32,671,532.37/8,201.86
  6. Step 6: Final answer
    x = 3,983.43

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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.