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Finding the Fourth Proportional to 7,213.96, 9,958.98 and 4,421.08

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Solution

The fourth proportional to 7,213.96, 9,958.98 and 4,421.08 is: 6,103.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.96 : 9,958.98 = 4,421.08 : x
  2. Step 2: Convert to fraction form
    7,213.96/9,958.98 = 4,421.08/x
  3. Step 3: Cross multiply
    7,213.96x = 9,958.98 × 4,421.08
  4. Step 4: Simplify right side
    7,213.96x = 44,029,447.30
  5. Step 5: Solve for x
    x = 44,029,447.30/7,213.96
  6. Step 6: Final answer
    x = 6,103.37

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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.