Home / 8,572.45-12,858.78-2,729.05

Finding the Fourth Proportional to 8,572.45, 12,858.78 and 2,729.05

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Solution

The fourth proportional to 8,572.45, 12,858.78 and 2,729.05 is: 4,093.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.45 : 12,858.78 = 2,729.05 : x
  2. Step 2: Convert to fraction form
    8,572.45/12,858.78 = 2,729.05/x
  3. Step 3: Cross multiply
    8,572.45x = 12,858.78 × 2,729.05
  4. Step 4: Simplify right side
    8,572.45x = 35,092,253.56
  5. Step 5: Solve for x
    x = 35,092,253.56/8,572.45
  6. Step 6: Final answer
    x = 4,093.61

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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.