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Finding the Fourth Proportional to 8,145.42, 11,240.64 and 4,419.42

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Solution

The fourth proportional to 8,145.42, 11,240.64 and 4,419.42 is: 6,098.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.42 : 11,240.64 = 4,419.42 : x
  2. Step 2: Convert to fraction form
    8,145.42/11,240.64 = 4,419.42/x
  3. Step 3: Cross multiply
    8,145.42x = 11,240.64 × 4,419.42
  4. Step 4: Simplify right side
    8,145.42x = 49,677,109.23
  5. Step 5: Solve for x
    x = 49,677,109.23/8,145.42
  6. Step 6: Final answer
    x = 6,098.78

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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.