Home / 7,928.85-11,893.89-2,381.76

Finding the Fourth Proportional to 7,928.85, 11,893.89 and 2,381.76

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Solution

The fourth proportional to 7,928.85, 11,893.89 and 2,381.76 is: 3,572.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.85 : 11,893.89 = 2,381.76 : x
  2. Step 2: Convert to fraction form
    7,928.85/11,893.89 = 2,381.76/x
  3. Step 3: Cross multiply
    7,928.85x = 11,893.89 × 2,381.76
  4. Step 4: Simplify right side
    7,928.85x = 28,328,391.45
  5. Step 5: Solve for x
    x = 28,328,391.45/7,928.85
  6. Step 6: Final answer
    x = 3,572.82

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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.