Home / 8,118.70-12,179.57-2,572.43

Finding the Fourth Proportional to 8,118.70, 12,179.57 and 2,572.43

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Solution

The fourth proportional to 8,118.70, 12,179.57 and 2,572.43 is: 3,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.70 : 12,179.57 = 2,572.43 : x
  2. Step 2: Convert to fraction form
    8,118.70/12,179.57 = 2,572.43/x
  3. Step 3: Cross multiply
    8,118.70x = 12,179.57 × 2,572.43
  4. Step 4: Simplify right side
    8,118.70x = 31,331,017.50
  5. Step 5: Solve for x
    x = 31,331,017.50/8,118.70
  6. Step 6: Final answer
    x = 3,859.12

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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.