Home / 8,318.42-12,479.97-3,638.84

Finding the Fourth Proportional to 8,318.42, 12,479.97 and 3,638.84

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Solution

The fourth proportional to 8,318.42, 12,479.97 and 3,638.84 is: 5,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.42 : 12,479.97 = 3,638.84 : x
  2. Step 2: Convert to fraction form
    8,318.42/12,479.97 = 3,638.84/x
  3. Step 3: Cross multiply
    8,318.42x = 12,479.97 × 3,638.84
  4. Step 4: Simplify right side
    8,318.42x = 45,412,614.03
  5. Step 5: Solve for x
    x = 45,412,614.03/8,318.42
  6. Step 6: Final answer
    x = 5,459.28

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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.