Home / 8,102.88-12,133.29-6,940.35

Finding the Fourth Proportional to 8,102.88, 12,133.29 and 6,940.35

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Solution

The fourth proportional to 8,102.88, 12,133.29 and 6,940.35 is: 10,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.88 : 12,133.29 = 6,940.35 : x
  2. Step 2: Convert to fraction form
    8,102.88/12,133.29 = 6,940.35/x
  3. Step 3: Cross multiply
    8,102.88x = 12,133.29 × 6,940.35
  4. Step 4: Simplify right side
    8,102.88x = 84,209,279.25
  5. Step 5: Solve for x
    x = 84,209,279.25/8,102.88
  6. Step 6: Final answer
    x = 10,392.51

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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.