Home / 8,126.72-12,190.52-2,580.49

Finding the Fourth Proportional to 8,126.72, 12,190.52 and 2,580.49

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Solution

The fourth proportional to 8,126.72, 12,190.52 and 2,580.49 is: 3,870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.72 : 12,190.52 = 2,580.49 : x
  2. Step 2: Convert to fraction form
    8,126.72/12,190.52 = 2,580.49/x
  3. Step 3: Cross multiply
    8,126.72x = 12,190.52 × 2,580.49
  4. Step 4: Simplify right side
    8,126.72x = 31,457,514.95
  5. Step 5: Solve for x
    x = 31,457,514.95/8,126.72
  6. Step 6: Final answer
    x = 3,870.87

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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.