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Finding the Fourth Proportional to 7,221.96, 10,837.80 and 5,375.16

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Solution

The fourth proportional to 7,221.96, 10,837.80 and 5,375.16 is: 8,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.96 : 10,837.80 = 5,375.16 : x
  2. Step 2: Convert to fraction form
    7,221.96/10,837.80 = 5,375.16/x
  3. Step 3: Cross multiply
    7,221.96x = 10,837.80 × 5,375.16
  4. Step 4: Simplify right side
    7,221.96x = 58,254,909.05
  5. Step 5: Solve for x
    x = 58,254,909.05/7,221.96
  6. Step 6: Final answer
    x = 8,066.36

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1.5x scale

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.