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Finding the Fourth Proportional to 8,676.55, 13,014.90 and 2,102.79

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Solution

The fourth proportional to 8,676.55, 13,014.90 and 2,102.79 is: 3,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.55 : 13,014.90 = 2,102.79 : x
  2. Step 2: Convert to fraction form
    8,676.55/13,014.90 = 2,102.79/x
  3. Step 3: Cross multiply
    8,676.55x = 13,014.90 × 2,102.79
  4. Step 4: Simplify right side
    8,676.55x = 27,367,601.57
  5. Step 5: Solve for x
    x = 27,367,601.57/8,676.55
  6. Step 6: Final answer
    x = 3,154.20

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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.