Home / 8,789.58-12,129.32-5,250.68

Finding the Fourth Proportional to 8,789.58, 12,129.32 and 5,250.68

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Solution

The fourth proportional to 8,789.58, 12,129.32 and 5,250.68 is: 7,245.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.58 : 12,129.32 = 5,250.68 : x
  2. Step 2: Convert to fraction form
    8,789.58/12,129.32 = 5,250.68/x
  3. Step 3: Cross multiply
    8,789.58x = 12,129.32 × 5,250.68
  4. Step 4: Simplify right side
    8,789.58x = 63,687,177.94
  5. Step 5: Solve for x
    x = 63,687,177.94/8,789.58
  6. Step 6: Final answer
    x = 7,245.76

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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.