Home / 8,210.92-12,316.38-4,919.89

Finding the Fourth Proportional to 8,210.92, 12,316.38 and 4,919.89

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Solution

The fourth proportional to 8,210.92, 12,316.38 and 4,919.89 is: 7,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.92 : 12,316.38 = 4,919.89 : x
  2. Step 2: Convert to fraction form
    8,210.92/12,316.38 = 4,919.89/x
  3. Step 3: Cross multiply
    8,210.92x = 12,316.38 × 4,919.89
  4. Step 4: Simplify right side
    8,210.92x = 60,595,234.80
  5. Step 5: Solve for x
    x = 60,595,234.80/8,210.92
  6. Step 6: Final answer
    x = 7,379.84

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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.