Home / 8,126.75-12,190.13-1,970.75

Finding the Fourth Proportional to 8,126.75, 12,190.13 and 1,970.75

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Solution

The fourth proportional to 8,126.75, 12,190.13 and 1,970.75 is: 2,956.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.75 : 12,190.13 = 1,970.75 : x
  2. Step 2: Convert to fraction form
    8,126.75/12,190.13 = 1,970.75/x
  3. Step 3: Cross multiply
    8,126.75x = 12,190.13 × 1,970.75
  4. Step 4: Simplify right side
    8,126.75x = 24,023,698.70
  5. Step 5: Solve for x
    x = 24,023,698.70/8,126.75
  6. Step 6: Final answer
    x = 2,956.13

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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.