Home / 8,209.53-12,315.68-3,279.27

Finding the Fourth Proportional to 8,209.53, 12,315.68 and 3,279.27

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Solution

The fourth proportional to 8,209.53, 12,315.68 and 3,279.27 is: 4,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.53 : 12,315.68 = 3,279.27 : x
  2. Step 2: Convert to fraction form
    8,209.53/12,315.68 = 3,279.27/x
  3. Step 3: Cross multiply
    8,209.53x = 12,315.68 × 3,279.27
  4. Step 4: Simplify right side
    8,209.53x = 40,386,423.56
  5. Step 5: Solve for x
    x = 40,386,423.56/8,209.53
  6. Step 6: Final answer
    x = 4,919.46

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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.