Home / 8,074.77-12,109.38-2,808.39

Finding the Fourth Proportional to 8,074.77, 12,109.38 and 2,808.39

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Solution

The fourth proportional to 8,074.77, 12,109.38 and 2,808.39 is: 4,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074.77 : 12,109.38 = 2,808.39 : x
  2. Step 2: Convert to fraction form
    8,074.77/12,109.38 = 2,808.39/x
  3. Step 3: Cross multiply
    8,074.77x = 12,109.38 × 2,808.39
  4. Step 4: Simplify right side
    8,074.77x = 34,007,861.70
  5. Step 5: Solve for x
    x = 34,007,861.70/8,074.77
  6. Step 6: Final answer
    x = 4,211.62

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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.