Home / 8,981.73-12,394.80-5,205.62

Finding the Fourth Proportional to 8,981.73, 12,394.80 and 5,205.62

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Solution

The fourth proportional to 8,981.73, 12,394.80 and 5,205.62 is: 7,183.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.73 : 12,394.80 = 5,205.62 : x
  2. Step 2: Convert to fraction form
    8,981.73/12,394.80 = 5,205.62/x
  3. Step 3: Cross multiply
    8,981.73x = 12,394.80 × 5,205.62
  4. Step 4: Simplify right side
    8,981.73x = 64,522,556.80
  5. Step 5: Solve for x
    x = 64,522,556.80/8,981.73
  6. Step 6: Final answer
    x = 7,183.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.