Home / 8,135.40-12,205.40-2,292.06

Finding the Fourth Proportional to 8,135.40, 12,205.40 and 2,292.06

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Solution

The fourth proportional to 8,135.40, 12,205.40 and 2,292.06 is: 3,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.40 : 12,205.40 = 2,292.06 : x
  2. Step 2: Convert to fraction form
    8,135.40/12,205.40 = 2,292.06/x
  3. Step 3: Cross multiply
    8,135.40x = 12,205.40 × 2,292.06
  4. Step 4: Simplify right side
    8,135.40x = 27,975,497.66
  5. Step 5: Solve for x
    x = 27,975,497.66/8,135.40
  6. Step 6: Final answer
    x = 3,438.74

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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.