Home / 8,139.21-12,208.81-3,754.27

Finding the Fourth Proportional to 8,139.21, 12,208.81 and 3,754.27

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Solution

The fourth proportional to 8,139.21, 12,208.81 and 3,754.27 is: 5,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.21 : 12,208.81 = 3,754.27 : x
  2. Step 2: Convert to fraction form
    8,139.21/12,208.81 = 3,754.27/x
  3. Step 3: Cross multiply
    8,139.21x = 12,208.81 × 3,754.27
  4. Step 4: Simplify right side
    8,139.21x = 45,835,169.12
  5. Step 5: Solve for x
    x = 45,835,169.12/8,139.21
  6. Step 6: Final answer
    x = 5,631.40

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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.