Home / 8,172.98-12,248.69-3,239.92

Finding the Fourth Proportional to 8,172.98, 12,248.69 and 3,239.92

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Solution

The fourth proportional to 8,172.98, 12,248.69 and 3,239.92 is: 4,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.98 : 12,248.69 = 3,239.92 : x
  2. Step 2: Convert to fraction form
    8,172.98/12,248.69 = 3,239.92/x
  3. Step 3: Cross multiply
    8,172.98x = 12,248.69 × 3,239.92
  4. Step 4: Simplify right side
    8,172.98x = 39,684,775.70
  5. Step 5: Solve for x
    x = 39,684,775.70/8,172.98
  6. Step 6: Final answer
    x = 4,855.61

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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.