Home / 8,265.10-12,387.12-3,872.88

Finding the Fourth Proportional to 8,265.10, 12,387.12 and 3,872.88

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Solution

The fourth proportional to 8,265.10, 12,387.12 and 3,872.88 is: 5,804.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,265.10 : 12,387.12 = 3,872.88 : x
  2. Step 2: Convert to fraction form
    8,265.10/12,387.12 = 3,872.88/x
  3. Step 3: Cross multiply
    8,265.10x = 12,387.12 × 3,872.88
  4. Step 4: Simplify right side
    8,265.10x = 47,973,829.31
  5. Step 5: Solve for x
    x = 47,973,829.31/8,265.10
  6. Step 6: Final answer
    x = 5,804.39

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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.