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Finding the Fourth Proportional to 8,672.10, 13,011.35 and 2,828.90

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Solution

The fourth proportional to 8,672.10, 13,011.35 and 2,828.90 is: 4,244.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.10 : 13,011.35 = 2,828.90 : x
  2. Step 2: Convert to fraction form
    8,672.10/13,011.35 = 2,828.90/x
  3. Step 3: Cross multiply
    8,672.10x = 13,011.35 × 2,828.90
  4. Step 4: Simplify right side
    8,672.10x = 36,807,808.02
  5. Step 5: Solve for x
    x = 36,807,808.02/8,672.10
  6. Step 6: Final answer
    x = 4,244.39

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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.