Home / 8,981.70-12,394.76-5,205.58

Finding the Fourth Proportional to 8,981.70, 12,394.76 and 5,205.58

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Solution

The fourth proportional to 8,981.70, 12,394.76 and 5,205.58 is: 7,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.70 : 12,394.76 = 5,205.58 : x
  2. Step 2: Convert to fraction form
    8,981.70/12,394.76 = 5,205.58/x
  3. Step 3: Cross multiply
    8,981.70x = 12,394.76 × 5,205.58
  4. Step 4: Simplify right side
    8,981.70x = 64,521,914.76
  5. Step 5: Solve for x
    x = 64,521,914.76/8,981.70
  6. Step 6: Final answer
    x = 7,183.71

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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.