Home / 8,145.25-12,198.74-3,972.17

Finding the Fourth Proportional to 8,145.25, 12,198.74 and 3,972.17

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Solution

The fourth proportional to 8,145.25, 12,198.74 and 3,972.17 is: 5,948.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.25 : 12,198.74 = 3,972.17 : x
  2. Step 2: Convert to fraction form
    8,145.25/12,198.74 = 3,972.17/x
  3. Step 3: Cross multiply
    8,145.25x = 12,198.74 × 3,972.17
  4. Step 4: Simplify right side
    8,145.25x = 48,455,479.70
  5. Step 5: Solve for x
    x = 48,455,479.70/8,145.25
  6. Step 6: Final answer
    x = 5,948.93

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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.