Home / 7,928.72-11,893.24-2,085.36

Finding the Fourth Proportional to 7,928.72, 11,893.24 and 2,085.36

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Solution

The fourth proportional to 7,928.72, 11,893.24 and 2,085.36 is: 3,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.72 : 11,893.24 = 2,085.36 : x
  2. Step 2: Convert to fraction form
    7,928.72/11,893.24 = 2,085.36/x
  3. Step 3: Cross multiply
    7,928.72x = 11,893.24 × 2,085.36
  4. Step 4: Simplify right side
    7,928.72x = 24,801,686.97
  5. Step 5: Solve for x
    x = 24,801,686.97/7,928.72
  6. Step 6: Final answer
    x = 3,128.08

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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.