Home / 8,139.38-12,200.84-3,207.10

Finding the Fourth Proportional to 8,139.38, 12,200.84 and 3,207.10

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Solution

The fourth proportional to 8,139.38, 12,200.84 and 3,207.10 is: 4,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.38 : 12,200.84 = 3,207.10 : x
  2. Step 2: Convert to fraction form
    8,139.38/12,200.84 = 3,207.10/x
  3. Step 3: Cross multiply
    8,139.38x = 12,200.84 × 3,207.10
  4. Step 4: Simplify right side
    8,139.38x = 39,129,313.96
  5. Step 5: Solve for x
    x = 39,129,313.96/8,139.38
  6. Step 6: Final answer
    x = 4,807.41

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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.