Home / 7,789.60-11,671.92-4,091.68

Finding the Fourth Proportional to 7,789.60, 11,671.92 and 4,091.68

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Solution

The fourth proportional to 7,789.60, 11,671.92 and 4,091.68 is: 6,130.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.60 : 11,671.92 = 4,091.68 : x
  2. Step 2: Convert to fraction form
    7,789.60/11,671.92 = 4,091.68/x
  3. Step 3: Cross multiply
    7,789.60x = 11,671.92 × 4,091.68
  4. Step 4: Simplify right side
    7,789.60x = 47,757,761.63
  5. Step 5: Solve for x
    x = 47,757,761.63/7,789.60
  6. Step 6: Final answer
    x = 6,130.96

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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.