Home / 8,911.98-13,372.58-3,917.86

Finding the Fourth Proportional to 8,911.98, 13,372.58 and 3,917.86

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Solution

The fourth proportional to 8,911.98, 13,372.58 and 3,917.86 is: 5,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.98 : 13,372.58 = 3,917.86 : x
  2. Step 2: Convert to fraction form
    8,911.98/13,372.58 = 3,917.86/x
  3. Step 3: Cross multiply
    8,911.98x = 13,372.58 × 3,917.86
  4. Step 4: Simplify right side
    8,911.98x = 52,391,872.64
  5. Step 5: Solve for x
    x = 52,391,872.64/8,911.98
  6. Step 6: Final answer
    x = 5,878.81

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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.