Home / 8,211.34-11,327.43-5,379.58

Finding the Fourth Proportional to 8,211.34, 11,327.43 and 5,379.58

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Solution

The fourth proportional to 8,211.34, 11,327.43 and 5,379.58 is: 7,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.34 : 11,327.43 = 5,379.58 : x
  2. Step 2: Convert to fraction form
    8,211.34/11,327.43 = 5,379.58/x
  3. Step 3: Cross multiply
    8,211.34x = 11,327.43 × 5,379.58
  4. Step 4: Simplify right side
    8,211.34x = 60,936,815.88
  5. Step 5: Solve for x
    x = 60,936,815.88/8,211.34
  6. Step 6: Final answer
    x = 7,421.06

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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.