Home / 8,140.26-12,206.70-3,206.10

Finding the Fourth Proportional to 8,140.26, 12,206.70 and 3,206.10

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Solution

The fourth proportional to 8,140.26, 12,206.70 and 3,206.10 is: 4,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.26 : 12,206.70 = 3,206.10 : x
  2. Step 2: Convert to fraction form
    8,140.26/12,206.70 = 3,206.10/x
  3. Step 3: Cross multiply
    8,140.26x = 12,206.70 × 3,206.10
  4. Step 4: Simplify right side
    8,140.26x = 39,135,900.87
  5. Step 5: Solve for x
    x = 39,135,900.87/8,140.26
  6. Step 6: Final answer
    x = 4,807.70

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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.