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Finding the Fourth Proportional to 8,542.44, 11,785.86 and 4,815.72

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Solution

The fourth proportional to 8,542.44, 11,785.86 and 4,815.72 is: 6,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.44 : 11,785.86 = 4,815.72 : x
  2. Step 2: Convert to fraction form
    8,542.44/11,785.86 = 4,815.72/x
  3. Step 3: Cross multiply
    8,542.44x = 11,785.86 × 4,815.72
  4. Step 4: Simplify right side
    8,542.44x = 56,757,401.72
  5. Step 5: Solve for x
    x = 56,757,401.72/8,542.44
  6. Step 6: Final answer
    x = 6,644.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.