Home / 8,209.12-12,312.44-2,662.64

Finding the Fourth Proportional to 8,209.12, 12,312.44 and 2,662.64

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Solution

The fourth proportional to 8,209.12, 12,312.44 and 2,662.64 is: 3,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.12 : 12,312.44 = 2,662.64 : x
  2. Step 2: Convert to fraction form
    8,209.12/12,312.44 = 2,662.64/x
  3. Step 3: Cross multiply
    8,209.12x = 12,312.44 × 2,662.64
  4. Step 4: Simplify right side
    8,209.12x = 32,783,595.24
  5. Step 5: Solve for x
    x = 32,783,595.24/8,209.12
  6. Step 6: Final answer
    x = 3,993.56

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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.