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Finding the Fourth Proportional to 8,221.04, 12,329.04 and 3,288.08

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Solution

The fourth proportional to 8,221.04, 12,329.04 and 3,288.08 is: 4,931.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.04 : 12,329.04 = 3,288.08 : x
  2. Step 2: Convert to fraction form
    8,221.04/12,329.04 = 3,288.08/x
  3. Step 3: Cross multiply
    8,221.04x = 12,329.04 × 3,288.08
  4. Step 4: Simplify right side
    8,221.04x = 40,538,869.84
  5. Step 5: Solve for x
    x = 40,538,869.84/8,221.04
  6. Step 6: Final answer
    x = 4,931.11

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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.