Home / 8,675.60-11,974.30-5,645.38

Finding the Fourth Proportional to 8,675.60, 11,974.30 and 5,645.38

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Solution

The fourth proportional to 8,675.60, 11,974.30 and 5,645.38 is: 7,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.60 : 11,974.30 = 5,645.38 : x
  2. Step 2: Convert to fraction form
    8,675.60/11,974.30 = 5,645.38/x
  3. Step 3: Cross multiply
    8,675.60x = 11,974.30 × 5,645.38
  4. Step 4: Simplify right side
    8,675.60x = 67,599,450.85
  5. Step 5: Solve for x
    x = 67,599,450.85/8,675.60
  6. Step 6: Final answer
    x = 7,791.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.