Home / 8,126.96-12,189.40-3,448.88

Finding the Fourth Proportional to 8,126.96, 12,189.40 and 3,448.88

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Solution

The fourth proportional to 8,126.96, 12,189.40 and 3,448.88 is: 5,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.96 : 12,189.40 = 3,448.88 : x
  2. Step 2: Convert to fraction form
    8,126.96/12,189.40 = 3,448.88/x
  3. Step 3: Cross multiply
    8,126.96x = 12,189.40 × 3,448.88
  4. Step 4: Simplify right side
    8,126.96x = 42,039,708.30
  5. Step 5: Solve for x
    x = 42,039,708.30/8,126.96
  6. Step 6: Final answer
    x = 5,172.87

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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.