Home / 8,143.37-12,206.85-3,211.10

Finding the Fourth Proportional to 8,143.37, 12,206.85 and 3,211.10

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Solution

The fourth proportional to 8,143.37, 12,206.85 and 3,211.10 is: 4,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.37 : 12,206.85 = 3,211.10 : x
  2. Step 2: Convert to fraction form
    8,143.37/12,206.85 = 3,211.10/x
  3. Step 3: Cross multiply
    8,143.37x = 12,206.85 × 3,211.10
  4. Step 4: Simplify right side
    8,143.37x = 39,197,416.04
  5. Step 5: Solve for x
    x = 39,197,416.04/8,143.37
  6. Step 6: Final answer
    x = 4,813.41

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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.