Home / 8,282.12-12,423.28-3,285.72

Finding the Fourth Proportional to 8,282.12, 12,423.28 and 3,285.72

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Solution

The fourth proportional to 8,282.12, 12,423.28 and 3,285.72 is: 4,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,282.12 : 12,423.28 = 3,285.72 : x
  2. Step 2: Convert to fraction form
    8,282.12/12,423.28 = 3,285.72/x
  3. Step 3: Cross multiply
    8,282.12x = 12,423.28 × 3,285.72
  4. Step 4: Simplify right side
    8,282.12x = 40,819,419.56
  5. Step 5: Solve for x
    x = 40,819,419.56/8,282.12
  6. Step 6: Final answer
    x = 4,928.62

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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.