Home / 8,126.46-12,189.60-2,580.21

Finding the Fourth Proportional to 8,126.46, 12,189.60 and 2,580.21

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Solution

The fourth proportional to 8,126.46, 12,189.60 and 2,580.21 is: 3,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.46 : 12,189.60 = 2,580.21 : x
  2. Step 2: Convert to fraction form
    8,126.46/12,189.60 = 2,580.21/x
  3. Step 3: Cross multiply
    8,126.46x = 12,189.60 × 2,580.21
  4. Step 4: Simplify right side
    8,126.46x = 31,451,727.82
  5. Step 5: Solve for x
    x = 31,451,727.82/8,126.46
  6. Step 6: Final answer
    x = 3,870.29

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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.