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Finding the Fourth Proportional to 8,672.08, 13,009.20 and 2,826.70

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Solution

The fourth proportional to 8,672.08, 13,009.20 and 2,826.70 is: 4,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.08 : 13,009.20 = 2,826.70 : x
  2. Step 2: Convert to fraction form
    8,672.08/13,009.20 = 2,826.70/x
  3. Step 3: Cross multiply
    8,672.08x = 13,009.20 × 2,826.70
  4. Step 4: Simplify right side
    8,672.08x = 36,773,105.64
  5. Step 5: Solve for x
    x = 36,773,105.64/8,672.08
  6. Step 6: Final answer
    x = 4,240.40

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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.