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Finding the Fourth Proportional to 8,260.56, 12,390.92 and 2,104.56

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Solution

The fourth proportional to 8,260.56, 12,390.92 and 2,104.56 is: 3,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,260.56 : 12,390.92 = 2,104.56 : x
  2. Step 2: Convert to fraction form
    8,260.56/12,390.92 = 2,104.56/x
  3. Step 3: Cross multiply
    8,260.56x = 12,390.92 × 2,104.56
  4. Step 4: Simplify right side
    8,260.56x = 26,077,434.60
  5. Step 5: Solve for x
    x = 26,077,434.60/8,260.56
  6. Step 6: Final answer
    x = 3,156.86

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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.