Home / 8,139.08-12,206.70-3,753.80

Finding the Fourth Proportional to 8,139.08, 12,206.70 and 3,753.80

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Solution

The fourth proportional to 8,139.08, 12,206.70 and 3,753.80 is: 5,629.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.08 : 12,206.70 = 3,753.80 : x
  2. Step 2: Convert to fraction form
    8,139.08/12,206.70 = 3,753.80/x
  3. Step 3: Cross multiply
    8,139.08x = 12,206.70 × 3,753.80
  4. Step 4: Simplify right side
    8,139.08x = 45,821,510.46
  5. Step 5: Solve for x
    x = 45,821,510.46/8,139.08
  6. Step 6: Final answer
    x = 5,629.81

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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.