Home / 8,320.61-12,481.52-2,621.09

Finding the Fourth Proportional to 8,320.61, 12,481.52 and 2,621.09

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Solution

The fourth proportional to 8,320.61, 12,481.52 and 2,621.09 is: 3,931.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.61 : 12,481.52 = 2,621.09 : x
  2. Step 2: Convert to fraction form
    8,320.61/12,481.52 = 2,621.09/x
  3. Step 3: Cross multiply
    8,320.61x = 12,481.52 × 2,621.09
  4. Step 4: Simplify right side
    8,320.61x = 32,715,205.36
  5. Step 5: Solve for x
    x = 32,715,205.36/8,320.61
  6. Step 6: Final answer
    x = 3,931.83

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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.