Home / 8,126.57-12,189.86-2,860.34

Finding the Fourth Proportional to 8,126.57, 12,189.86 and 2,860.34

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Solution

The fourth proportional to 8,126.57, 12,189.86 and 2,860.34 is: 4,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.57 : 12,189.86 = 2,860.34 : x
  2. Step 2: Convert to fraction form
    8,126.57/12,189.86 = 2,860.34/x
  3. Step 3: Cross multiply
    8,126.57x = 12,189.86 × 2,860.34
  4. Step 4: Simplify right side
    8,126.57x = 34,867,129.85
  5. Step 5: Solve for x
    x = 34,867,129.85/8,126.57
  6. Step 6: Final answer
    x = 4,290.51

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Similar ratio
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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.