Home / 8,960.40-13,440.60-3,112.89

Finding the Fourth Proportional to 8,960.40, 13,440.60 and 3,112.89

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Solution

The fourth proportional to 8,960.40, 13,440.60 and 3,112.89 is: 4,669.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.40 : 13,440.60 = 3,112.89 : x
  2. Step 2: Convert to fraction form
    8,960.40/13,440.60 = 3,112.89/x
  3. Step 3: Cross multiply
    8,960.40x = 13,440.60 × 3,112.89
  4. Step 4: Simplify right side
    8,960.40x = 41,839,109.33
  5. Step 5: Solve for x
    x = 41,839,109.33/8,960.40
  6. Step 6: Final answer
    x = 4,669.34

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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.