Home / 8,146.87-11,242.83-4,789.78

Finding the Fourth Proportional to 8,146.87, 11,242.83 and 4,789.78

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Solution

The fourth proportional to 8,146.87, 11,242.83 and 4,789.78 is: 6,609.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.87 : 11,242.83 = 4,789.78 : x
  2. Step 2: Convert to fraction form
    8,146.87/11,242.83 = 4,789.78/x
  3. Step 3: Cross multiply
    8,146.87x = 11,242.83 × 4,789.78
  4. Step 4: Simplify right side
    8,146.87x = 53,850,682.28
  5. Step 5: Solve for x
    x = 53,850,682.28/8,146.87
  6. Step 6: Final answer
    x = 6,609.98

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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.